| View previous topic :: View next topic |
| Author |
Message |
Lee Olsen
Guest
|
 Posted: Sun Jul 13, 2008 11:43 pm Post subject: Re: H.erectus got his food running on the savanna |
 |
|
On Jul 13, 7:16 am, Marc Verhaegen <m_verhae...@skynet.be> wrote:
[quote]Here are the facts, bone density facilitates running in Homo
:-DDD
you>re a stupid fool, olson boy
[/quote]
Says the wetloon who doesn>t know a mountain beaver from a capybara. |
|
| |
|
 Back to top |
RichTravsky
Guest
|
| Posted: Mon Jul 28, 2008 7:00 am Post subject: Re: H.erectus got part of his food in shallow water |
|
|
Marc Verhaegen wrote:
[quote]
Savanna Fool now denies H.erectus had high bone density...
[/quote]
I>m just asking where erectus is mentioned in the paper. Perhaps you mis-read
it since English is not your first language...
[quote]Op 11-07-2008 07:26, in artikel 4876EF11.B5C72226@hotmMOVEail.com, Rich
Travsky <traRvEsky@hotmMOVEail.com> schreef:
Rick Wagler wrote:
"Marc Verhaegen" <m_verhaegen@skynet.be> wrote in message
Sink or swim?
Bone density as a mechanism for buoyancy control in early cetaceans
Noel-Marie Gray, Kimberly Kainec, Sandra Madar, Lucas Tomko & Scott Wolfe
Anat Rec 290:638-653, 2007
Previous analyses have shown that secondarily aquatic tetrapods, including
whales, exhibit osteological adaptations to life in water as part of their
complex buoyancy control systems. These structural specializations of bone
span hyperostosis through osteoporosis. The past 15 years of
paleontological
effort has provided an unprecedented opportunity to examine the
osteological
transformation of whales as they make their transition to an obligate
aquatic lifestyle over a 10-million-year period. It is hypothesized that
whales manifest their osteological specialization in the same manner as
extant semiaquatic and fully aquatic mammals. This study presents and
analysis of the microstructural features of bone in early and late archaic
cetaceans, and in a comparative sample of modern terrestrial, semiaquatic,
and aquatic mammals. Bone histology was examined from the ribs of 10
fossilized individuals representing five early cetacean families,
including
Pakicetidae, Ambulocetidae, Protocetidae, Remintonocetidae, and
Basilosauridae. Comparisons were then made with rib histology from nine
genera of extant mammals including: Odocoileus (deer), Bos (cow), Equus
(horse), Canis (dog), Lutra (river otter), Enhydra (sea otter), Choeropsis
(pygmy hippo), Trichechus (sea cow), and Delphinus (dolphin). Results show
that the transition from terrestrial, to semiaquatic, to obligate aquatic
locomotion in archaeocetes involved a radical shift in bone function
achieved by means of profound changes at the microstructural level. A
surprising finding was that microstructural change predates gross
anatomical
shift in archaeocetes associated with swimming. Histological analysis
shows
that high bone density is an aquatic specialization that provides static
buoyancy control (ballast) for animals living in shallow water, while low
bone density is associated with dynamic buoyancy control for animals
living
in deep water. Thus, there was a shift from the typical terrestrial form,
to
osteopetrosis and pachyosteosclerosis, and then to osteoporosis in the
first
quarter of cetacean evolutionary history.
Interesting abstract. Where>s the part about H erectus?
Links to html and pdf versions of the paper are here:
http://www3.interscience.wiley.com/journal/114265636/abstract?CRETRY=1&SRETRY=
0
Absolutely zero mention of erectus.
But that was easily guessed.[/quote] |
|
| |
|
| Back to top |
Lee Olsen
Guest
|
| Posted: Mon Jul 28, 2008 12:12 pm Post subject: Re: H.erectus got part of his food in shallow water......pro |
|
|
On Jul 28, 4:26 am, Marc Verhaegen <m_verhae...@skynet.be> wrote:
[quote]savanna fool doesn>t even know that erectus had pachyostosis:
[/quote]
That>s an argument for something? What? Don>t hide it, spit it out.
We know what our early ancestors were eating by the cut-marked bones
on kudus, termite digging sticks, and the C4 isotope signature in the
teeth. Never hear of:
http://www.scienceinafrica.co.za/2001/december/hominids.htm
No? I didn>t think so.
No coconuts or shellfish evidence here, wetloon.
AAT is a falsified issue. |
|
| |
|
| Back to top |
Marc Verhaegen
Guest
|
| Posted: Mon Jul 28, 2008 4:26 pm Post subject: Re: H.erectus got part of his food in shallow water |
|
|
savanna fool doesn>t even know that erectus had pachyostosis:
Op 28-07-2008 05:22, in artikel 488D3B89.7B895D6F@hotmMOVEail.com,
RichTravsky <traRvEsky@hotmMOVEail.com> schreef:
[quote]Marc Verhaegen wrote:
Savanna Fool now denies H.erectus had high bone density...
I>m just asking where erectus is mentioned in the paper. Perhaps you mis-read
it since English is not your first language...
Op 11-07-2008 07:26, in artikel 4876EF11.B5C72226@hotmMOVEail.com, Rich
Travsky <traRvEsky@hotmMOVEail.com> schreef:
Rick Wagler wrote:
"Marc Verhaegen" <m_verhaegen@skynet.be> wrote in message
Sink or swim?
Bone density as a mechanism for buoyancy control in early cetaceans
Noel-Marie Gray, Kimberly Kainec, Sandra Madar, Lucas Tomko & Scott Wolfe
Anat Rec 290:638-653, 2007
Previous analyses have shown that secondarily aquatic tetrapods, including
whales, exhibit osteological adaptations to life in water as part of their
complex buoyancy control systems. These structural specializations of bone
span hyperostosis through osteoporosis. The past 15 years of
paleontological
effort has provided an unprecedented opportunity to examine the
osteological
transformation of whales as they make their transition to an obligate
aquatic lifestyle over a 10-million-year period. It is hypothesized that
whales manifest their osteological specialization in the same manner as
extant semiaquatic and fully aquatic mammals. This study presents and
analysis of the microstructural features of bone in early and late archaic
cetaceans, and in a comparative sample of modern terrestrial, semiaquatic,
and aquatic mammals. Bone histology was examined from the ribs of 10
fossilized individuals representing five early cetacean families,
including
Pakicetidae, Ambulocetidae, Protocetidae, Remintonocetidae, and
Basilosauridae. Comparisons were then made with rib histology from nine
genera of extant mammals including: Odocoileus (deer), Bos (cow), Equus
(horse), Canis (dog), Lutra (river otter), Enhydra (sea otter), Choeropsis
(pygmy hippo), Trichechus (sea cow), and Delphinus (dolphin). Results show
that the transition from terrestrial, to semiaquatic, to obligate aquatic
locomotion in archaeocetes involved a radical shift in bone function
achieved by means of profound changes at the microstructural level. A
surprising finding was that microstructural change predates gross
anatomical
shift in archaeocetes associated with swimming. Histological analysis
shows
that high bone density is an aquatic specialization that provides static
buoyancy control (ballast) for animals living in shallow water, while low
bone density is associated with dynamic buoyancy control for animals
living
in deep water. Thus, there was a shift from the typical terrestrial form,
to
osteopetrosis and pachyosteosclerosis, and then to osteoporosis in the
first
quarter of cetacean evolutionary history.
Interesting abstract. Where>s the part about H erectus?
Links to html and pdf versions of the paper are here:
http://www3.interscience.wiley.com/journal/114265636/abstract?CRETRY=1&SRETRY
=
0
Absolutely zero mention of erectus.
But that was easily guessed.[/quote] |
|
| |
|
| Back to top |
Lee Olsen
Guest
|
| Posted: Tue Jul 29, 2008 2:05 am Post subject: Re: H.erectus got part of his food in shallow water......pro |
|
|
On Jul 28, 2:44 pm, Marc Verhaegen <m_verhae...@skynet.be> wrote:
[quote]uninformed Savanna Fantast now claims:
We know what our early ancestors were eating by the cut-marked bones
on kudus, termite digging sticks
you>re pathetic, olson boy: the termite digging sticks are about A.robustus
[/quote]
Learn to read English, pervert:
International Journal of Osteoarchaeology
Volume 13, Issue 1-2 , Pages 104 - 113
What do stable isotopes tell us about hominid dietary and ecological
niches in the pliocene?
J. A. Lee-Thorp 1 *, M. Sponheimer 2, N. J. van der Merwe 1
"By now a reasonable set of carbon and oxygen isotope data from tooth
enamel has been accumulated for South African Plio-Pleistocene
hominids and associated fauna. Almost all individuals measured,
independent of species and importantly, environment, show significant
C4 dietary inputs with some individuals showing very substantial C4
inputs. This implies interactions with grassy environments for a
period of well over a million years, a period that saw environments in
southern Africa shift from closed woodlands to more open, grassy
landscapes. Carbon isotope analysis alone is unable to permit the
important distinction between direct consumption of grasses, or
indirect consumption via grass-eating animals, such as small
vertebrates and invertebrates. Other chemical tools provide ambiguous
results. For instance, hominid strontium/calcium distributions at
Swartkrans have been interpreted as supporting omnivory, but other
explanations are equally plausible. Relatively low oxygen isotope
values for all hominids in comparison to associated fauna show
similarities with suids, monkeys and carnivores, but the causes of
these similarities are as yet poorly understood. On present evidence
hominid interaction with grassland foods is secure although their
exact nature remains elusive."
What part of ALL HOMINIDS don>t you understand??? Apiths can make a
digging stick but Homo can>t? ROFL
Wetloons are stupid, stupid, stupid.... |
|
| |
|
| Back to top |
Marc Verhaegen
Guest
|
| Posted: Tue Jul 29, 2008 2:44 am Post subject: Re: H.erectus got part of his food in shallow water......pro |
|
|
uninformed Savanna Fantast now claims:
[quote]We know what our early ancestors were eating by the cut-marked bones
on kudus, termite digging sticks
[/quote]
you>re pathetic, olson boy: the termite digging sticks are about A.robustus |
|
| |
|
| Back to top |
Marc Verhaegen
Guest
|
| Posted: Tue Jul 29, 2008 7:00 am Post subject: Re: H.erectus got part of his food in shallow water......pro |
|
|
Savanna Fool doesn>t understand the words "termite" & "digging stick":
Op 29-07-2008 04:05, in artikel
ec097a1e-9d52-4666-a29b-4869f56d21a3@v1g2000pra.googlegroups.com, Lee Olsen
<paleocity@hotmail.com> schreef:
[quote]On Jul 28, 2:44 pm, Marc Verhaegen <m_verhae...@skynet.be> wrote:
uninformed Savanna Fantast now claims:
We know what our early ancestors were eating by the cut-marked bones
on kudus, termite digging sticks
you>re pathetic, olson boy: the termite digging sticks are about A.robustus
Learn to read English, pervert:
International Journal of Osteoarchaeology
Volume 13, Issue 1-2 , Pages 104 - 113
What do stable isotopes tell us about hominid dietary and ecological
niches in the pliocene?
J. A. Lee-Thorp 1 *, M. Sponheimer 2, N. J. van der Merwe 1
"By now a reasonable set of carbon and oxygen isotope data from tooth
enamel has been accumulated for South African Plio-Pleistocene
hominids and associated fauna. Almost all individuals measured,
independent of species and importantly, environment, show significant
C4 dietary inputs with some individuals showing very substantial C4
inputs. This implies interactions with grassy environments for a
period of well over a million years, a period that saw environments in
southern Africa shift from closed woodlands to more open, grassy
landscapes. Carbon isotope analysis alone is unable to permit the
important distinction between direct consumption of grasses, or
indirect consumption via grass-eating animals, such as small
vertebrates and invertebrates. Other chemical tools provide ambiguous
results. For instance, hominid strontium/calcium distributions at
Swartkrans have been interpreted as supporting omnivory, but other
explanations are equally plausible. Relatively low oxygen isotope
values for all hominids in comparison to associated fauna show
similarities with suids, monkeys and carnivores, but the causes of
these similarities are as yet poorly understood. On present evidence
hominid interaction with grassland foods is secure although their
exact nature remains elusive."
What part of ALL HOMINIDS don>t you understand??? Apiths can make a
digging stick but Homo can>t? ROFL
[/quote]
SFs are stupid, stupid, stupid.... |
|
| |
|
| Back to top |
Lee Olsen
Guest
|
| Posted: Tue Jul 29, 2008 11:53 am Post subject: Re: H.erectus got part of his food in shallow water......pro |
|
|
On Jul 28, 11:37 pm, Marc Verhaegen <m_verhae...@skynet.be> wrote:
[quote]Savanna Fool doesn>t understand the words "termite" & "digging stick":
[/quote]
Stupid wetloon doesn>t even know how to catch a termite.
You are dumber than a chimp.
[quote]
Op 29-07-2008 04:05, in artikel
ec097a1e-9d52-4666-a29b-4869f56d2...@v1g2000pra.googlegroups.com, Lee Olsen
paleoc...@hotmail.com> schreef:
On Jul 28, 2:44 pm, Marc Verhaegen <m_verhae...@skynet.be> wrote:
uninformed Savanna Fantast now claims:
We know what our early ancestors were eating by the cut-marked bones
on kudus, termite digging sticks
you>re pathetic, olson boy: the termite digging sticks are about A.robustus
Learn to read English, pervert:
International Journal of Osteoarchaeology
Volume 13, Issue 1-2 , Pages 104 - 113
What do stable isotopes tell us about hominid dietary and ecological
niches in the pliocene?
J. A. Lee-Thorp 1 *, M. Sponheimer 2, N. J. van der Merwe 1
"By now a reasonable set of carbon and oxygen isotope data from tooth
enamel has been accumulated for South African Plio-Pleistocene
hominids and associated fauna. Almost all individuals measured,
independent of species and importantly, environment, show significant
C4 dietary inputs with some individuals showing very substantial C4
inputs. This implies interactions with grassy environments for a
period of well over a million years, a period that saw environments in
southern Africa shift from closed woodlands to more open, grassy
landscapes. Carbon isotope analysis alone is unable to permit the
important distinction between direct consumption of grasses, or
indirect consumption via grass-eating animals, such as small
vertebrates and invertebrates. Other chemical tools provide ambiguous
results. For instance, hominid strontium/calcium distributions at
Swartkrans have been interpreted as supporting omnivory, but other
explanations are equally plausible. Relatively low oxygen isotope
values for all hominids in comparison to associated fauna show
similarities with suids, monkeys and carnivores, but the causes of
these similarities are as yet poorly understood. On present evidence
hominid interaction with grassland foods is secure although their
exact nature remains elusive."
What part of ALL HOMINIDS don>t you understand??? Apiths can make a
digging stick but Homo can>t? ROFL
SFs are stupid, stupid, stupid....- Hide quoted text -[/quote] |
|
| |
|
| Back to top |
Marc Verhaegen
Guest
|
| Posted: Wed Jul 30, 2008 2:58 am Post subject: Re: H.erectus got part of his food in shallow water......pro |
|
|
savanna arguments:
[quote]Stupid wetloon doesn>t even know how to catch a termite.
You are dumber than a chimp.[/quote] |
|
| |
|
| Back to top |
|
