Search the web
Sign In
New User? Sign Up
palanthsci · Paleoanthropology, science, and society
? Already a member? Sign in to Yahoo!

Yahoo! Groups Tips

Did you know...
Message search is now enhanced, find messages faster. Take it for a spin.

Best of Y! Groups

   Check them out and nominate your group.
Having problems with message search? Fill out this form to ensure your group is one of the first to be migrated to the new message search system.

Messages

  Messages Help
Advanced
Messages 36191 - 36221 of 36221   Oldest  |  < Older  |  Newer >  |  Newest
Messages: Show Message Summaries   (Group by Topic) Sort by Date ^  
#36191 From: "bramhesse" <br.hessels@...>
Date: Sat Nov 21, 2009 8:22 am
Subject: Re: Paper: The geometry of hobbits: Homo floresiensis and human evolution
bramhesse
Offline Offline
Send Email Send Email
 
I expected some sophisticated statistical number crunching, but anyway, nice,
short and easy to understand paper...

--- In palanthsci@yahoogroups.com, David Timpe <dptimpe@...> wrote:
>
> I'm not sure *Significance* even qualifies as a peer-reviewed journal.  Oh,
> well.  The pictures are nice, and it's something open access from Wiley.
>
> Dave
>
> On Fri, Nov 20, 2009 at 9:26 AM, Steve Wang <swang003@...> wrote:
>
> >
> >
> > This is a nice and colored compendium on current development but nothing
> > really new if you have been following the debate--JHE's November special
> > issue on *H. floresiensis* (13 articles) is now in print.  I've uploaded
> > the Jungers/Baab paper in *Significance *for those interested...
> >
> > -Steve
> >
> >
> >
> > --- In palanthsci@yahoogroups.com, "bramhesse" <br.hessels@> wrote:
> > >
> > > From the journal Significance. The paper is open acces.
> > > http://www3.interscience.wiley.com/journal/122688405/abstract
> > > <http://www3.interscience.wiley.com/journal/122688405/abstract>
> > >
> > >
> > > The geometry of hobbits: Homo floresiensis and human evolution
> > >
> > > William Jungers and Karen Baab
> > >
> > > ABSTRACT
> > >
> > > Until quite recently modern humans shared the earth with now extinct
> > > relatives—Neanderthals and others—in Europe and Asia. Homo
> > > floresiensis—dubbed the "hobbits" in the popular press—is the
> > > most recent, and the most surprising, addition to the human family tree.
> > > Were the tiny hobbit people of Flores dwarfed descendents of known
> > > species, modern humans suffering from a skull-shrinking genetic disease
> > > or a new species entirely?William Jungers and Karen Baab look at the
> > > time, the space and the body-shape of the astonishing hobbits.
> > >
> >
> >
> >
>

#36193 From: "bramhesse" <br.hessels@...>
Date: Sat Nov 21, 2009 9:28 am
Subject: Re: New Au. anamensis fossils from Ethiopia and early australopith taxonomy
bramhesse
Offline Offline
Send Email Send Email
 

 

I don't get the impression that in their case lumping means that populations are "really" the same and that differences are unimportant.

These three groups,  A. anamensis ----new finds from Woranso-Mille----A. afarensis, document part of an evolving lineage, interesting in itself, but not easy to describe in terms of species definitions.


--- In palanthsci@yahoogroups.com, Anne Gilbert <avgilbert@...> wrote:
>
> Dave:
>
> The people who made these assessments are apparently "lumpers". Which is interesting, because there is even more "splitting" of australopithecines, as far as I can tell, than there is with all these species("species"?) of Homo.
> Anne G
>
>
>
>
>
> Looks like the species problem again.
>
> Dave
>
>
> On Wed, Nov 18, 2009 at 5:16 PM, Steve Wang swang003@... wrote:
>
>
> New hominid fossils from Woranso-Mille (Central Afar, Ethiopia) and taxonomy of early Australopithecus
> Yohannes Haile-Selassie 1 *, Beverly Z. Saylor 2, Alan Deino 3, Mulugeta Alene 4, Bruce M. Latimer 5
>
> 1The Cleveland Museum of Natural History, Cleveland, OH 44106
> 2Department of Earth Sciences, Case Western Reserve University, Cleveland, OH 44106
> 3Berkeley Geochronology Center, Berkeley, CA 94709
> 4Department of Earth Sciences, Addis Ababa University, Addis Ababa, Ethiopia
> 5Department of Anthropology, Case Western Reserve University, Cleveland, OH 44106
>
> Keywords
> Australopithecus • Pliocene • taxonomy • Woranso-Mille • Ethiopia
>
> Abstract
> The phylogenetic relationship between Australopithecus anamensis and Australopithecus afarensis has been hypothesized as ancestor-descendant. However, the weakest part of this hypothesis has been the absence of fossil samples between 3.6 and 3.9 million years ago. Here we describe new fossil specimens from the Woranso-Mille site in Ethiopia that are directly relevant to this issue. They derive from sediments chronometrically dated to 3.57-3.8 million years ago. The new fossil specimens are largely isolated teeth, partial mandibles, and maxillae, and some postcranial fragments. However, they shed some light on the relationships between Au. anamensis and Au. afarensis. The dental morphology shows closer affinity with Au. anamensis from Allia Bay/Kanapoi (Kenya) and Asa Issie (Ethiopia) than with Au. afarensis from Hadar (Ethiopia). However, they are intermediate in dental and mandibular morphology between Au. anamensis and the older Au. afarensis material from Laetoli. The new fossils lend strong support to the hypothesized ancestor-descendant relationship between these two early Australopithecus species. The Woranso-Mille hominids cannot be unequivocally assigned to either taxon due to their dental morphological intermediacy. This could be an indication that the Kanapoi, Allia Bay, and Asa Issie Au. anamensis is the primitive form of Au. afarensis at Hadar with the Laetoli and Woranso-Mille populations sampling a mosaic of morphological features from both ends. It is particularly difficult to draw a line between Au. anamensis and Au. afarensis in light of the new discoveries from Woranso-Mille. The morphology provides no evidence that Au. afarensis and Au. anamensis represent distinct taxa. Am J Phys Anthropol 2010. © 2009 Wiley-Liss, Inc.
>


#36194 From: palanthsci@yahoogroups.com
Date: Sat Nov 21, 2009 10:09 am
Subject: New file uploaded to palanthsci
palanthsci@yahoogroups.com
Send Email Send Email
 
Hello,

This email message is a notification to let you know that
a file has been uploaded to the Files area of the palanthsci
group.

   File        : /Balter - Better Homes and Hearth, Neandertal-Style - 09.pdf
   Uploaded by : bramhesse <br.hessels@...>
   Description : Balter - Better Homes and Hearth, Neandertal-Style - 09

You can access this file at the URL:
http://groups.yahoo.com/group/palanthsci/files/Balter%20-%20Better%20Homes%20and\
%20Hearth%2C%20Neandertal-Style%20-%2009.pdf

To learn more about file sharing for your group, please visit:
http://help.yahoo.com/l/us/yahoo/groups/original/members/forms/general.htmlfiles

Regards,

bramhesse <br.hessels@...>

#36195 From: palanthsci@yahoogroups.com
Date: Sat Nov 21, 2009 10:36 am
Subject: New file uploaded to palanthsci
palanthsci@yahoogroups.com
Send Email Send Email
 
Hello,

This email message is a notification to let you know that
a file has been uploaded to the Files area of the palanthsci
group.

   File        : /Johnson - Megafaunal Collapse intro - 09.pdf
   Uploaded by : bramhesse <br.hessels@...>
   Description : Johnson - Megafaunal Collapse intro

You can access this file at the URL:
http://groups.yahoo.com/group/palanthsci/files/Johnson%20-%20Megafaunal%20Collap\
se%20intro%20-%2009.pdf

To learn more about file sharing for your group, please visit:
http://help.yahoo.com/l/us/yahoo/groups/original/members/forms/general.htmlfiles

Regards,

bramhesse <br.hessels@...>

#36196 From: palanthsci@yahoogroups.com
Date: Sat Nov 21, 2009 10:37 am
Subject: New file uploaded to palanthsci
palanthsci@yahoogroups.com
Send Email Send Email
 
Hello,

This email message is a notification to let you know that
a file has been uploaded to the Files area of the palanthsci
group.

   File        : /Gill - Megafaunal Collapse - 09.pdf
   Uploaded by : bramhesse <br.hessels@...>
   Description : Gill - Megafauna collapse

You can access this file at the URL:
http://groups.yahoo.com/group/palanthsci/files/Gill%20-%20Megafaunal%20Collapse%\
20-%2009.pdf

To learn more about file sharing for your group, please visit:
http://help.yahoo.com/l/us/yahoo/groups/original/members/forms/general.htmlfiles

Regards,

bramhesse <br.hessels@...>

#36197 From: Anne Gilbert <avgilbert@...>
Date: Sat Nov 21, 2009 10:12 pm
Subject: Re: New file uploaded to palanthsci
shanidar9
Offline Offline
Send Email Send Email
 
Bram:
 
Thanks for uploading that article.  I would have uploaded it myself(except I downloaded it and then forgot).  It pretty much makes Neandertals much more respectable than (mostly) has  been the case previously.  But OTOH,  see the comment at the very end of the article.  When he opened his mouth, I don't think Wadley was even thinking straight.
Anne G
 

 


Hello,

This email message is a notification to let you know that
a file has been uploaded to the Files area of the palanthsci
group.

File : /Balter - Better Homes and Hearth, Neandertal-Style - 09.pdf
Uploaded by : bramhesse <br.hessels@planet.nl>
Description : Balter - Better Homes and Hearth, Neandertal-Style - 09

You can access this file at the URL:
http://groups.yahoo.com/group/palanthsci/files/Balter%20-%20Better%20Homes%20and%20Hearth%2C%20Neandertal-Style%20-%2009.pdf

To learn more about file sharing for your group, please visit:
http://help.yahoo.com/l/us/yahoo/groups/original/members/forms/general.htmlfiles

Regards,

bramhesse <br.hessels@planet.nl>



#36198 From: Anne Gilbert <avgilbert@...>
Date: Sat Nov 21, 2009 10:14 pm
Subject: Re: Re: New Au. anamensis fossils from Ethiopia and early australopith taxonomy
shanidar9
Offline Offline
Send Email Send Email
 
Bram:
 
I didn't mean that, exactly, either.  When I said these guys were "lumpers", they seemed to think, as far as I could tell, that the species mentioned were actually subspecies.  Which implies some biological difference, just not as much as three separate species.
 Anne G
 

 

I don't get the impression that in their case lumping means that populations are "really" the same and that differences are unimportant.

These three groups,  A. anamensis ----new finds from Woranso-Mille----A. afarensis, document part of an evolving lineage, interesting in itself, but not easily to discribe in terms of species definitions.


--- In palanthsci@yahoogroups.com, Anne Gilbert <avgilbert@...> wrote:
>
> Dave:
>
> The people who made these assessments are apparently "lumpers". Which is interesting, because there is even more "splitting" of australopithecines, as far as I can tell, than there is with all these species("species"?) of Homo.
> Anne G
>
>
>
>
>
> Looks like the species problem again.
>
> Dave
>
>
> On Wed, Nov 18, 2009 at 5:16 PM, Steve Wang swang003@... wrote:
>
>
> New hominid fossils from Woranso-Mille (Central Afar, Ethiopia) and taxonomy of early Australopithecus
> Yohannes Haile-Selassie 1 *, Beverly Z. Saylor 2, Alan Deino 3, Mulugeta Alene 4, Bruce M. Latimer 5
>
> 1The Cleveland Museum of Natural History, Cleveland, OH 44106
> 2Department of Earth Sciences, Case Western Reserve University, Cleveland, OH 44106
> 3Berkeley Geochronology Center, Berkeley, CA 94709
> 4Department of Earth Sciences, Addis Ababa University, Addis Ababa, Ethiopia
> 5Department of Anthropology, Case Western Reserve University, Cleveland, OH 44106
>
> Keywords
> Australopithecus • Pliocene • taxonomy • Woranso-Mille • Ethiopia
>
> Abstract
> The phylogenetic relationship between Australopithecus anamensis and Australopithecus afarensis has been hypothesized as ancestor-descendant. However, the weakest part of this hypothesis has been the absence of fossil samples between 3.6 and 3.9 million years ago. Here we describe new fossil specimens from the Woranso-Mille site in Ethiopia that are directly relevant to this issue. They derive from sediments chronometrically dated to 3.57-3.8 million years ago. The new fossil specimens are largely isolated teeth, partial mandibles, and maxillae, and some postcranial fragments. However, they shed some light on the relationships between Au. anamensis and Au. afarensis. The dental morphology shows closer affinity with Au. anamensis from Allia Bay/Kanapoi (Kenya) and Asa Issie (Ethiopia) than with Au. afarensis from Hadar (Ethiopia). However, they are intermediate in dental and mandibular morphology between Au. anamensis and the older Au. afarensis material from Laetoli. The new fossils lend strong support to the hypothesized ancestor-descendant relationship between these two early Australopithecus species. The Woranso-Mille hominids cannot be unequivocally assigned to either taxon due to their dental morphological intermediacy. This could be an indication that the Kanapoi, Allia Bay, and Asa Issie Au. anamensis is the primitive form of Au. afarensis at Hadar with the Laetoli and Woranso-Mille populations sampling a mosaic of morphological features from both ends. It is particularly difficult to draw a line between Au. anamensis and Au. afarensis in light of the new discoveries from Woranso-Mille. The morphology provides no evidence that Au. afarensis and Au. anamensis represent distinct taxa. Am J Phys Anthropol 2010. © 2009 Wiley-Liss, Inc.
>


#36199 From: David Timpe <dptimpe@...>
Date: Sun Nov 22, 2009 9:28 pm
Subject: Re: Re: Another interesting article
dptimpe
Offline Offline
Send Email Send Email
 
I don't see a comment here.
 
 
Dave

On Sat, Nov 21, 2009 at 1:36 AM, Jack Kilmon <jkilmon@...> wrote:
 

 

Sent: Thursday, November 19, 2009 4:30 PM
Subject: Re: [palanthsci] Re: Another interesting article

The Dutch 'sch' is weird, assuming the BBC people I've heard pronounce it are even close.  I wonder if that cluster occurs in any other language.
 
Dave

On Mon, Nov 16, 2009 at 11:35 AM, leigh van valen <leigh@...> wrote:
 

During World War 2 the Dutch asked suspected German infiltrators to pronounce Scheveningen, the coastal town by (officially part of) 's Gravenhage (= den Haag, = The Hague.)
 -Leigh

That sure sounds familiar.  Judges 12:6:
 
Then said they unto him, Say now Shibboleth: and he said Sibboleth: for he could not frame to pronounce [it] right. Then they took him, and slew him at the passages of Jordan: and there fell at that time of the Ephraimites forty and two thousand.
 
Betcha that's where they got the idea.
 
Jack



#36200 From: David Timpe <dptimpe@...>
Date: Sun Nov 22, 2009 9:30 pm
Subject: Re: Re: Paper: The geometry of hobbits: Homo floresiensis and human evolution
dptimpe
Offline Offline
Send Email Send Email
 
It all depends on the significance of the word significance.
 
Bill Clinton.
On Sat, Nov 21, 2009 at 2:22 AM, bramhesse <br.hessels@...> wrote:
 

I expected some sophisticated statistical number crunching, but anyway, nice, short and easy to understand paper...



--- In palanthsci@yahoogroups.com, David Timpe <dptimpe@...> wrote:
>
> I'm not sure *Significance* even qualifies as a peer-reviewed journal. Oh,
> well. The pictures are nice, and it's something open access from Wiley.
>
> Dave
>
> On Fri, Nov 20, 2009 at 9:26 AM, Steve Wang <swang003@...> wrote:
>
> >
> >
> > This is a nice and colored compendium on current development but nothing
> > really new if you have been following the debate--JHE's November special
> > issue on *H. floresiensis* (13 articles) is now in print. I've uploaded
> > the Jungers/Baab paper in *Significance *for those interested...
> >
> > -Steve
> >
> >
> >
> > --- In palanthsci@yahoogroups.com, "bramhesse" <br.hessels@> wrote:
> > >
> > > From the journal Significance. The paper is open acces.
> > > http://www3.interscience.wiley.com/journal/122688405/abstract
> > > <http://www3.interscience.wiley.com/journal/122688405/abstract>
> > >
> > >
> > > The geometry of hobbits: Homo floresiensis and human evolution
> > >
> > > William Jungers and Karen Baab
> > >
> > > ABSTRACT
> > >
> > > Until quite recently modern humans shared the earth with now extinct
> > > relatives—Neanderthals and others—in Europe and Asia. Homo
> > > floresiensis—dubbed the "hobbits" in the popular press—is the
> > > most recent, and the most surprising, addition to the human family tree.
> > > Were the tiny hobbit people of Flores dwarfed descendents of known
> > > species, modern humans suffering from a skull-shrinking genetic disease
> > > or a new species entirely?William Jungers and Karen Baab look at the
> > > time, the space and the body-shape of the astonishing hobbits.
> > >
> >
> >
> >
>



#36201 From: David Timpe <dptimpe@...>
Date: Sun Nov 22, 2009 10:28 pm
Subject: Clever ant-ics from Live Science
dptimpe
Offline Offline
Send Email Send Email
 
There's some suprising hints at cognitive complexity in this story.  The paper is in PLoS one, if you're antsy to read it.
 
Dave

#36202 From: Anne Gilbert <avgilbert@...>
Date: Mon Nov 23, 2009 1:49 am
Subject: Re: Clever ant-ics from Live Science
shanidar9
Offline Offline
Send Email Send Email
 
Dave:
 
Sounds like certain aspects of our supposedly special behavior go far back.  Way far back, in evolutionary terms. . . . .
Anne G
 

 

There's some suprising hints at cognitive complexity in this story.  The paper is in PLoS one, if you're antsy to read it.
 
Dave


#36203 From: avgilbert@...
Date: Mon Nov 23, 2009 4:26 am
Subject: Bloglines - Paleo-celebrity
shanidar9
Offline Offline
Send Email Send Email
 
Bloglines user AnneGilbert (avgilbert@...) has sent this item to you, with the following personal message:

All:


A friendly BBC correspondent, stationed in Indonesia, went to see a local celebrity. . . .
Anne G


BBC News   BBC News | News Front Page | World Edition
Get the latest BBC World news: international news, features and analysis from Africa, Americas, South Asia, Asia-Pacific, Europe and the Middle East.

Paleo-celebrity

In From Our Own Correspondent

A journey to the Java home of an ancient alpha male



#36204 From: avgilbert@...
Date: Mon Nov 23, 2009 10:09 pm
Subject: Bloglines - A Plethora of Hobbit Papers
shanidar9
Offline Offline
Send Email Send Email
 
Bloglines user AnneGilbert (avgilbert@...) has sent this item to you, with the following personal message:

All:

I don't know how interesting any of this information will be at the moment, nor can I quite remember if anybody has posted anything on this forum previously ab out this. But it seems there is a cornucopia of articles in JHE


Origins
A History of Beginnings

A Plethora of Hobbit Papers

By Elizabeth Culotta

by Elizabeth Culotta Fans of Homo floresiensis will be happy this month, as the Journal of Human Evolution (JHE) has a special issue devoted to these diminutive hominins whose fossils were found on the Indonesian island of Flores. There’s also...



#36205 From: avgilbert@...
Date: Mon Nov 23, 2009 10:11 pm
Subject: Bloglines - A Plethora of Hobbit Papers
shanidar9
Offline Offline
Send Email Send Email
 
Bloglines user AnneGilbert (avgilbert@...) has sent this item to you, with the following personal message:

All:

Sorry for the double mailing here. I got cut off in the middle. Anyway, this article and JHE have a bunch of papers about the "hobbits". Which I'm sure some people will be interested in reading.
Anne G


Origins
A History of Beginnings

A Plethora of Hobbit Papers

By Elizabeth Culotta

by Elizabeth Culotta Fans of Homo floresiensis will be happy this month, as the Journal of Human Evolution (JHE) has a special issue devoted to these diminutive hominins whose fossils were found on the Indonesian island of Flores. There’s also...



#36206 From: David Timpe <dptimpe@...>
Date: Tue Nov 24, 2009 4:21 am
Subject: Papua highlanders evolve resistance to kuru
dptimpe
Offline Offline
Send Email Send Email
 
At least that's what this study reported in Science Daily says.  It would seem to be another argument against those who occasionally suggest that some kuru-like disease killed off the Neandertals.  It's also another case of recent (and in this case, very recent) evolution.

Dave

#36207 From: "bramhesse" <br.hessels@...>
Date: Tue Nov 24, 2009 9:19 am
Subject: Re: Paper: The geometry of hobbits: Homo floresiensis and human evolution
bramhesse
Offline Offline
Send Email Send Email
 
Many things have significance to many other things. Must be a journal of broad
scope...

--- In palanthsci@yahoogroups.com, David Timpe <dptimpe@...> wrote:
>
> It all depends on the significance of the word significance.
>
> Bill Clinton.
> On Sat, Nov 21, 2009 at 2:22 AM, bramhesse <br.hessels@...> wrote:
>
> >
> >
> > I expected some sophisticated statistical number crunching, but anyway,
> > nice, short and easy to understand paper...
> >
> >
> > --- In palanthsci@yahoogroups.com <palanthsci%40yahoogroups.com>, David
> > Timpe <dptimpe@> wrote:
> > >
> > > I'm not sure *Significance* even qualifies as a peer-reviewed journal.
> > Oh,
> > > well. The pictures are nice, and it's something open access from Wiley.
> > >
> > > Dave
> > >
> >  > On Fri, Nov 20, 2009 at 9:26 AM, Steve Wang <swang003@> wrote:
> > >
> > > >
> > > >
> > > > This is a nice and colored compendium on current development but
> > nothing
> > > > really new if you have been following the debate--JHE's November
> > special
> > > > issue on *H. floresiensis* (13 articles) is now in print. I've uploaded
> > > > the Jungers/Baab paper in *Significance *for those interested...
> > > >
> > > > -Steve
> > > >
> > > >
> > > >
> > > > --- In palanthsci@yahoogroups.com <palanthsci%40yahoogroups.com>,
> > "bramhesse" <br.hessels@> wrote:
> > > > >
> > > > > From the journal Significance. The paper is open acces.
> > > > > http://www3.interscience.wiley.com/journal/122688405/abstract
> > > > > <http://www3.interscience.wiley.com/journal/122688405/abstract>
> > > > >
> > > > >
> > > > > The geometry of hobbits: Homo floresiensis and human evolution
> > > > >
> > > > > William Jungers and Karen Baab
> > > > >
> > > > > ABSTRACT
> > > > >
> > > > > Until quite recently modern humans shared the earth with now extinct
> > > > > relatives—Neanderthals and others—in Europe and Asia. Homo
> > > > > floresiensis—dubbed the "hobbits" in the popular press—is the
> > > > > most recent, and the most surprising, addition to the human family
> > tree.
> > > > > Were the tiny hobbit people of Flores dwarfed descendents of known
> > > > > species, modern humans suffering from a skull-shrinking genetic
> > disease
> > > > > or a new species entirely?William Jungers and Karen Baab look at the
> > > > > time, the space and the body-shape of the astonishing hobbits.
> > > > >
> > > >
> > > >
> > > >
> > >
> >
> >
> >
>

#36208 From: Anne Gilbert <avgilbert@...>
Date: Tue Nov 24, 2009 11:01 pm
Subject: Re: [Paleoanthro] Papua highlanders evolve resistance to kuru
shanidar9
Offline Offline
Send Email Send Email
 
Dave:
 
Even without this particular bit of information, one would, I think, have to logically conclude that whatever "cannibalism" practices Neandertals may have had, they must have evolved some way of "dealing" with any kuru-like diseases, or they probably would not have shown up in the  human evolutionary record. 
Anne G
 

 

At least that's what this study reported in Science Daily says.  It would seem to be another argument against those who occasionally suggest that some kuru-like disease killed off the Neandertals.  It's also another case of recent (and in this case, very recent) evolution.


Dave


#36209 From: avgilbert@...
Date: Wed Nov 25, 2009 12:10 am
Subject: Bloglines - Qafzeh teeth like Neandertals
shanidar9
Offline Offline
Send Email Send Email
 
Bloglines user AnneGilbert (avgilbert@...) has sent this item to you, with the following personal message:

All:

It looks like at least some "modern" humans had tooth growth patterns that were rather similar to those of Neandertals. . . . John Hawks at his finest, as usual.
Anne G


john hawks weblog

Qafzeh teeth like Neandertals

By John Hawks on teeth

Debbie Guatelli-Steinberg and Donald Reid report on the perikymata spacing of a sample of fourteen anterior teeth from Qafzeh. These are "early modern humans", among the earliest to be located outside of Africa, but their anatomical position relative to Neandertals and other groups has been subject to frequent dispute.

As I've emphasized several times ("Neandertal teeth: the other shoe", "How modern is "modern tooth development"?"), this growth characteristic of teeth is variable among living human populations. What remains totally unclear is why it varies.

Neandertals are at the low end of the human range of variation for perikymata counts on their anterior teeth, and the patterning of packing across the tooth is somewhat different. In particular, Neandertals have fewer perikymata nearer the roots of these teeth (for details, I suggest Guatelli-Steinberg's 2009 review article).

The current paper follows up on earlier work by Janet Monge and colleagues (2006). They emphasized that the Qafzeh anterior teeth fit within the overall human range of variation, but observed that two individuals were very close to Neandertals in their packing patterns. Here, Guatelli-Steinberg and Reid include more specimens in the sample, confirming this similarity.

From their conclusion:

The purpose of this study was to investigate whether Qafzeh teeth are different from those of modern humans in the percentage of perikymata present in their cervical [sic] appear to fall in the lower 50% of the modern human distribution, and a few fall within the lowest 5% of the distribution. Thus, this sample of Qafzeh teeth appears to differ from those of modern humans in the same direction that Neandertals do: with generally lower percentages of perikymata in their cervical regions. As can be seen in the SEM montages in Figure 2, perikymata become much more closely spaced in the cervical relative to incisal halves of the Inupiaq LI2 than they do in either the Neandertal or Qafzeh LI2s. Although sample sizes precluded a similar test between the Qafzeh and Neandertal teeth, plots of the averages for these teeth (Fig. 1a,b) reveal the similarity of the Qafzeh and Neandertal teeth, particularly for the UI2, LC, LI2, and LC. Values for two of the Qafzeh UI1s and a single UC are closer to the modern human than Neandertal means for these tooth types, revealing overlap in the ranges of values, as is also true for Neandertals and modern humans (Guatelli-Steinberg et al., 2007).

It may be worth pointing out that the perikymata packing pattern was a key part of Ramirez-Rossi and colleagues' conclusion that the Les Rois B mandible as well as several other Les Rois dental specimens show affinities to Neandertals.

I think Monge and colleagues are correct in asserting that this packing pattern is not a taxonomic diagnosis. Notwithstanding that the precise Neandertal-like pattern, present at Qafzeh, does not occur in the known human samples, we still don't know why human patterns differ from each other. In their discussion, Guatelli-Steinberg and Reid suggest alternatives for the mechanism forming the straiae, but I'd like to have some kind of genetic answer -- what developmental processes changed, carrying this feature along with them?

Anyway, another contrary observation to the idea of "modern human dental development", I guess.

References:

Guatelli-Steinberg D, Reid DJ. 2010. Distribution of Perikymata
on Qafzeh Anterior Teeth. Am J Phys Anthropol (in press). doi:10.1002/ajpa.21158

Guatelli-Steinberg D, Reid DJ, Bishop TA, Larsen CS. 2005. Anterior tooth growth periods in Neandertals were comparable to those of modern humans. Proc Nat Acad Sci USA 102:14197-14202. doi:10.1073/pnas.0503108102

Guatelli-Steinberg D. 2009. Recent studies of dental development in Neandertals: Implications for Neandertal life histories. Evol Anthropol 18:9-20. doi:10.1002/evan.20190

Monge JM, Tillier A-M, Mann AE. 2006. Perikymata number and spacing on early modern human teeth : Evidence from Qafzeh cave, Israel. Bull Mem Soc Anthropol Paris 18:25-33.

Ramirez Rozzi FV, d'Errico F, Vanhaeren M, Grootes PM, Kerautret B, Dujardin V. 2009. Cutmarked human remains bearing Neandertal features and modern human remains associated with the Aurignacian at Les Rois. J Anthropol Sci 87:153-185.



#36210 From: "Jack Kilmon" <jkilmon@...>
Date: Wed Nov 25, 2009 12:17 am
Subject: Re: [Paleoanthro] Papua highlanders evolve resistance to kuru
jkilmon_2000
Offline Offline
Send Email Send Email
 
Although I think it likely that Neandertal cannibalized members of the group that died during periods of scarce game, I don't think it was a routine practice.  I am still not sure that some of the evidence for cannibalism may not have been raiding AMH who still practice cannibalism.  I have visited the Fore in the PNG Highlands and I saw someone wasting from Kuru.  It was pitiful.  The question is whether this prion disease and Creutzfeldt-Jakob, GSS and FFI existed in the Paleolithic.  Unfortunately we cannot ID a prion disease from just skeletal fossils but as the research goes on maybe there will be some clues about the origins of prions.  Were they endogenous retroviruses that lost their nucleic material?  I hate not being actively engaged in research any more.  Makes me nuts. LOL
 
Jack

Sent: Tuesday, November 24, 2009 5:01 PM
Subject: Re: [Paleoanthro] Papua highlanders evolve resistance to kuru

Dave:
 
Even without this particular bit of information, one would, I think, have to logically conclude that whatever "cannibalism" practices Neandertals may have had, they must have evolved some way of "dealing" with any kuru-like diseases, or they probably would not have shown up in the  human evolutionary record. 
Anne G
 

 

At least that's what this study reported in Science Daily says.  It would seem to be another argument against those who occasionally suggest that some kuru-like disease killed off the Neandertals.  It's also another case of recent (and in this case, very recent) evolution.


Dave


#36211 From: Joe Cooper <joe0727@...>
Date: Wed Nov 25, 2009 5:55 am
Subject: Are Chinese descendants of an African Eve?
pepper072747
Offline Offline
Send Email Send Email
 
#36212 From: Paul Finlow-Bates <wolf_thunder51@...>
Date: Wed Nov 25, 2009 1:41 pm
Subject: Re: Are Chinese descendants of an African Eve?
unecungga
Offline Offline
Send Email Send Email
 
Can somebody please explain to me how the same species, capable of complete fertile interbreeding, can evolve independently in different locations? Doesn't that fly in the face of every known genetic and evolutionary principle?
 
Paul

--- On Wed, 25/11/09, Joe Cooper <joe0727@...> wrote:

From: Joe Cooper <joe0727@...>
Subject: [palanthsci] Are Chinese descendants of an African Eve?
To: palanthsci@yahoogroups.com
Date: Wednesday, 25 November, 2009, 5:55



#36213 From: Michael Brass <mikearchaeology@...>
Date: Wed Nov 25, 2009 4:17 pm
Subject: Re: Are Chinese descendants of an African Eve?
mikearchaeology
Offline Offline
Send Email Send Email
 
2009/11/25 Paul Finlow-Bates <wolf_thunder51@...>
>
>
> Can somebody please explain to me how the same species, capable of complete
fertile interbreeding, can evolve independently in different locations?

Can't do.

Then again, the article is poorly written and demonstrates little or
no grasp of what multiregionalism is.

#36214 From: Anne Gilbert <avgilbert@...>
Date: Wed Nov 25, 2009 8:21 pm
Subject: Re: Are Chinese descendants of an African Eve?
shanidar9
Offline Offline
Send Email Send Email
 
 
Mike:
 
FWIW, very few people seem to have a grasp of the multiregional concept.
Anne G

 

2009/11/25 Paul Finlow-Bates <wolf_thunder51@yahoo.co.uk>
>
>
> Can somebody please explain to me how the same species, capable of complete fertile interbreeding, can evolve independently in different locations?

Can't do.

Then again, the article is poorly written and demonstrates little or
no grasp of what multiregionalism is.


#36215 From: Anne Gilbert <avgilbert@...>
Date: Wed Nov 25, 2009 8:23 pm
Subject: Re: Re: [Paleoanthro] Papua highlanders evolve resistance to kuru
shanidar9
Offline Offline
Send Email Send Email
 
Jack:
 
We also can't be sure that some of this Neandertal cannibalism wasn't something along the lines of  "when Grandma Sue and Uncle Joe died, they ate them because they loved them so much".  There are "modern" humans who have been known to practice such "funerary cannibalism"  Some of them are in PNG. Or at least the descendants of such people are.
Anne G
 

 

Although I think it likely that Neandertal cannibalized members of the group that died during periods of scarce game, I don't think it was a routine practice.  I am still not sure that some of the evidence for cannibalism may not have been raiding AMH who still practice cannibalism.  I have visited the Fore in the PNG Highlands and I saw someone wasting from Kuru.  It was pitiful.  The question is whether this prion disease and Creutzfeldt-Jakob, GSS and FFI existed in the Paleolithic.  Unfortunately we cannot ID a prion disease from just skeletal fossils but as the research goes on maybe there will be some clues about the origins of prions.  Were they endogenous retroviruses that lost their nucleic material?  I hate not being actively engaged in research any more.  Makes me nuts. LOL
 
Jack

 

#36216 From: Torfinn Ørmen <torf-o@...>
Date: Wed Nov 25, 2009 8:39 pm
Subject: Re: Are Chinese descendants of an African Eve?
torfinnoe
Offline Offline
Send Email Send Email
 

In Weidenreich's original formulation of the hypothesis multiregional evolution wasn't supposed to happen independently. The basic idea is that a widely distributed species (Homo erectus) diversified and adapted to local conditions while having just enough gene flow between the different demes to prevent any speciation. Modern multiregionalists like Wolpoff regard H. erectus as a just a sub- or chronospecies of sapiens. Thus the species H. sapiens really only evolved once (as erectus) and in one location (Africa), but the sapiens characteristics evolved later as all the different demes evolved in (incomplete) geographic isolation with just enough gene flow to spread the sapiens traits around the planet and prevent speciation. I guess it is a theoretically possible scenario, but the RooA scenario is a lot simpler. (Not to mention better supported.)
 
 

Can somebody please explain to me how the same species, capable of complete fertile interbreeding, can evolve independently in different locations? Doesn't that fly in the face of every known genetic and evolutionary principle?
 
Paul

--- On Wed, 25/11/09, Joe Cooper <joe0727@sbcglobal.net> wrote:

From: Joe Cooper <joe0727@sbcglobal.net>
Subject: [palanthsci] Are Chinese descendants of an African Eve?
To: palanthsci@yahoogroups.com
Date: Wednesday, 25 November, 2009, 5:55



#36217 From: Anne Gilbert <avgilbert@...>
Date: Wed Nov 25, 2009 9:08 pm
Subject: Re: Are Chinese descendants of an African Eve?
shanidar9
Offline Offline
Send Email Send Email
 

Torfinn:
 
This is a very good summary of the Multiregional position.  Whether it is "correct" or not, I couldn't say.  I think both OoA and MRE are both, in some ways, at least partly right, so I guess you could say I subscribe to both theories.
Anne G
 

 



In Weidenreich's original formulation of the hypothesis multiregional evolution wasn't supposed to happen independently. The basic idea is that a widely distributed species (Homo erectus) diversified and adapted to local conditions while having just enough gene flow between the different demes to prevent any speciation. Modern multiregionalists like Wolpoff regard H. erectus as a just a sub- or chronospecies of sapiens. Thus the species H. sapiens really only evolved once (as erectus) and in one location (Africa), but the sapiens characteristics evolved later as all the different demes evolved in (incomplete) geographic isolation with just enough gene flow to spread the sapiens traits around the planet and prevent speciation. I guess it is a theoretically possible scenario, but the RooA scenario is a lot simpler. (Not to mention better supported.)
 
 

Can somebody please explain to me how the same species, capable of complete fertile interbreeding, can evolve independently in different locations? Doesn't that fly in the face of every known genetic and evolutionary principle?
 
Paul

--- On Wed, 25/11/09, Joe Cooper <joe0727@sbcglobal.net> wrote:

From: Joe Cooper <joe0727@sbcglobal.net>
Subject: [palanthsci] Are Chinese descendants of an African Eve?
To: palanthsci@yahoogroups.com
Date: Wednesday, 25 November, 2009, 5:55



#36218 From: Paul Finlow-Bates <wolf_thunder51@...>
Date: Thu Nov 26, 2009 12:33 pm
Subject: Re: Are Chinese descendants of an African Eve?
unecungga
Offline Offline
Send Email Send Email
 
That explains the concept; thanks for that.  Out of Africa seems more likely to me just from an "Ockham's Razor" point of view; these widely scattered sparse populations succesfully meeting up across the whole of Eurasia enough to maintain breeding continuity seems a bit of a stretch.  Also, from what I understand of the fossil and archaeological record, the AMH seem to crop up remarkably rapidly and abruptly, and I'd expect much more gradual change from multi-regional.
 
Then there's the inductive evidence; do we know of any other species that has clearly evolved multiregionally?
 
I guess the key point is whether or not H. erectus and H. sapiens are in fact one species.  They seem very different to me; I'm no anatomist but based on the pictures I've seen, if you put an erectus skull and an AMH one on the table, I could tell you which was which pretty easily.  Far more easily than I could tell a lion skull from a tiger skull for example, and they clearly are different species.
 
Paul

--- On Wed, 25/11/09, Anne Gilbert <avgilbert@...> wrote:

From: Anne Gilbert <avgilbert@...>
Subject: Re: [palanthsci] Are Chinese descendants of an African Eve?
To: palanthsci@yahoogroups.com
Date: Wednesday, 25 November, 2009, 21:08

 

Torfinn:
 
This is a very good summary of the Multiregional position.  Whether it is "correct" or not, I couldn't say.  I think both OoA and MRE are both, in some ways, at least partly right, so I guess you could say I subscribe to both theories.
Anne G
 

 

In Weidenreich' s original formulation of the hypothesis multiregional evolution wasn't supposed to happen independently. The basic idea is that a widely distributed species (Homo erectus) diversified and adapted to local conditions while having just enough gene flow between the different demes to prevent any speciation. Modern multiregionalists like Wolpoff regard H. erectus as a just a sub- or chronospecies of sapiens. Thus the species H. sapiens really only evolved once (as erectus) and in one location (Africa), but the sapiens characteristics evolved later as all the different demes evolved in (incomplete) geographic isolation with just enough gene flow to spread the sapiens traits around the planet and prevent speciation. I guess it is a theoretically possible scenario, but the RooA scenario is a lot simpler. (Not to mention better supported.)
 
 
Can somebody please explain to me how the same species, capable of complete fertile interbreeding, can evolve independently in different locations? Doesn't that fly in the face of every known genetic and evolutionary principle?
 
Paul

--- On Wed, 25/11/09, Joe Cooper <joe0727@sbcglobal. net> wrote:

From: Joe Cooper <joe0727@sbcglobal. net>
Subject: [palanthsci] Are Chinese descendants of an African Eve?
To: palanthsci@yahoogro ups.com
Date: Wednesday, 25 November, 2009, 5:55




#36219 From: Michael Brass <mikearchaeology@...>
Date: Thu Nov 26, 2009 1:15 pm
Subject: Re: Are Chinese descendants of an African Eve?
mikearchaeology
Offline Offline
Send Email Send Email
 
Hi Paul,

I would purchase a copy of Wolpoff's Paleoanthropology if I were you
to be able to understand the intricacies of the model (there are
different models of multiregionalism anyways; Trinkaus's differs, for
example) in detail. There are also a number of papers from the early
1990s which give his stance and the reasons behind it.

Mike

#36220 From: Michael Brass <mikearchaeology@...>
Date: Thu Nov 26, 2009 5:41 pm
Subject: Papers on Africa in Antiquity
mikearchaeology
Offline Offline
Send Email Send Email
 
---------- Forwarded message ----------
From:
Date: 2009/11/26
Subject: [Safaannounce-l] Papers on Africa in Antiquity
To: safaannounce-l@



Dear Colleagues,

The most recent issue of Antiquity (December 2009) has ‘hit the ether’ so to
speak, and is now online. There are three exciting research articles on
African topics:

http://antiquity.ac.uk/index.html

E. Huysecom, M. Rasse, L. Lespez, K. Neumann, A. Fahmy, A. Ballouche, S.
Ozainne, M. Maggetti, Ch. Tribolo and S. Soriano, “The emergence of pottery
in Africa during the tenth millennium cal BC: new evidence from Ounjougou
(Mali)”

Nick Brooks, Joanne Clarke, Salvatore Garfi and Anne Pirie, “The archaeology
of Western Sahara: results of environmental and archaeological
reconnaissance”

Thomas X. Schuhmacher, João Luís Cardoso and Arun Banerjee, “Sourcing
African ivory in Chalcolithic Portugal”

In addition, there is a book review of Adrar Bous: archaeology of a Central
Saharan granitic ring complex in Niger by J. Desmond Clark, Elizabeth J.
Agrilla, Diana C. Crader, Alison Galloway, Elena A.A. Garcea, Diane
Gifford-Gonzalez, David N. Hall, Andrew B. Smith and Martin A.J. Williams.

Also check-out the online gallery for news about recent work at Kalambo
Falls by Larry Barham and colleagues
http://antiquity.ac.uk/projgall/barham322/

And if that was not enough, there is a good plug for African Archaeology and
a mention of the forthcoming PAA/SAfA meeting in Dakar next year in the
December editorial.  http://antiquity.ac.uk/ant/083/ant0830899.htm

Antiquity’s editor Martin Carver, a colleague here at York, is always
reminding me to encourage Africanist colleagues to submit papers to him – so
please do.  And DO make use of the gallery for publishing short updates on
your field projects.

With best wishes

Paul Lane
President, SAfA



Paul Lane, MA, PhD, FSA
HEEAL Project Team Leader
Department of Archaeology,
University of York
King's Manor
York YO1 7EP
UK

#36221 From: Anne Gilbert <avgilbert@...>
Date: Thu Nov 26, 2009 9:06 pm
Subject: Re: Are Chinese descendants of an African Eve?
shanidar9
Offline Offline
Send Email Send Email
 

Paul:
 
MIke understands these things already, but multiregionalism doesn't really claim that Homo evolved regionally.  What it says, basically is that Homo spread out from Africa very early.  And  whether Wolpoff is right or not, I think that the genus Homo is "generalistic" enough so  that interfertility may indeed have been possible, and there is apparently some genetic evidence for this, though it is contested.     IOW  they are all, apparently, far  more closely related than we would like to believe, and many of the later varieties migrated, probably met other little groups of humans, and sometimes exchanged genes.  And from time to time, kept migrating and exchanging genes.  Which is one reason I bring up the genus Canis a lot, as well as the tangled genetic material of certain gull species, as contemporary, "natural" examples.  The big thing with multiregionalism is (a) an early migration of a stem species of Homo out of Africa(could be erectus), and (b) all members of the genus Homo are (probably) closely enough related, behaviorally and otherwise, to be interfertile.
Anne G
 

 

That explains the concept; thanks for that.  Out of Africa seems more likely to me just from an "Ockham's Razor" point of view; these widely scattered sparse populations succesfully meeting up across the whole of Eurasia enough to maintain breeding continuity seems a bit of a stretch.  Also, from what I understand of the fossil and archaeological record, the AMH seem to crop up remarkably rapidly and abruptly, and I'd expect much more gradual change from multi-regional.
 
Then there's the inductive evidence; do we know of any other species that has clearly evolved multiregionally?
 
I guess the key point is whether or not H. erectus and H. sapiens are in fact one species.  They seem very different to me; I'm no anatomist but based on the pictures I've seen, if you put an erectus skull and an AMH one on the table, I could tell you which was which pretty easily.  Far more easily than I could tell a lion skull from a tiger skull for example, and they clearly are different species.
 


 
 

 

 

In Weidenreich' s original formulation of the hypothesis multiregional evolution wasn't supposed to happen independently. The basic idea is that a widely distributed species (Homo erectus) diversified and adapted to local conditions while having just enough gene flow between the different demes to prevent any speciation. Modern multiregionalists like Wolpoff regard H. erectus as a just a sub- or chronospecies of sapiens. Thus the species H. sapiens really only evolved once (as erectus) and in one location (Africa), but the sapiens characteristics evolved later as all the different demes evolved in (incomplete) geographic isolation with just enough gene flow to spread the sapiens traits around the planet and prevent speciation. I guess it is a theoretically possible scenario, but the RooA scenario is a lot simpler. (Not to mention better supported.)
 
 
Can somebody please explain to me how the same species, capable of complete fertile interbreeding, can evolve independently in different locations? Doesn't that fly in the face of every known genetic and evolutionary principle?
 
Paul

--- On Wed, 25/11/09, Joe Cooper <joe0727@sbcglobal. net> wrote:

From: Joe Cooper <joe0727@sbcglobal. net>
Subject: [palanthsci] Are Chinese descendants of an African Eve?
To: palanthsci@yahoogro ups.com
Date: Wednesday, 25 November, 2009, 5:55




Messages 36191 - 36221 of 36221   Oldest  |  < Older  |  Newer >  |  Newest
Advanced
Add to My Yahoo!      XML What's This?

Copyright © 2009 Yahoo! Inc. All rights reserved.
Privacy Policy - Terms of Service - Guidelines - Help