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It seems that for all their numbers, passenger pigeons actually had a lower genetic diversity than expected. This would have implications for their susceptibility to extinction at human hands.

science.sciencemag.org/content…
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The scaly tyrannosaurs paper has gotten a lot of attention. Here's something else worth sharing.

What are perhaps new Homo sapiens remains have been found. And they're 100,000 years older than when we thought our species appeared (c. 300k years ago).

www.theguardian.com/science/20…
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It seems that for all their numbers, passenger pigeons actually had a lower genetic diversity than expected. This would have implications for their susceptibility to extinction at human hands.

science.sciencemag.org/content…
  • Listening to: Myself typing
  • Reading: Notes I took in advance for Bio101
  • Watching: Myself typing
  • Playing: Nothing
  • Eating: Nothing
  • Drinking: Nothing (eventually root beer or Monster)

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Dinopithecus
United States
Biology student; aspire to get into paleontology one day
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:iconszymoonio:
Szymoonio Featured By Owner Edited Jun 4, 2017  Professional Digital Artist
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:iconjdailey1991:
Jdailey1991 Featured By Owner Apr 23, 2017
Happy Birthday
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:icondinopithecus:
Dinopithecus Featured By Owner Apr 23, 2017
Thanks man!
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:iconijreid:
ijreid Featured By Owner Apr 13, 2017  Hobbyist Digital Artist
About titanosaur lateral bracing. I was blocked by asuma, so I'll post my reply here.

Um, I cannot really disclose the link right now, its part of a project on titanosaurs. I will link an example image svpow.files.wordpress.com/2009… note the prominent enlargement of the cervical rib, and transverse process.
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:icondinopithecus:
Dinopithecus Featured By Owner Edited Apr 14, 2017
Oh, thanks for telling me about the status of the whole thing.

So, if I'm looking at the right thing, there looks to be a rugose texture(?) on the lateral projection; I can't tell if it's post-mortem cracking or an actual feature of the bone. If the latter, that would indicate keratin (like in apatosaurines), right?
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:iconijreid:
ijreid Featured By Owner Apr 14, 2017  Hobbyist Digital Artist
Yeah, if its rugose there would be keratin covering the rugose region.
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:iconleogon:
Leogon Featured By Owner Edited Jul 5, 2016  Hobbyist General Artist
Waiting to hear of your opinion on the fissured claws:-)
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:icondinopithecus:
Dinopithecus Featured By Owner Jul 5, 2016
Here's what I think MAY be the reason for fissured claws.

There's a blog I came across that noted that chalicotheres had fissured unguals as well. Apparently, their claws (I presume it meant the keratin sheathes) grew out of and were anchored into these fissures, making them very strong and highly resistant to impacts. Maybe the same thing was true for the claws of Hyaenodon. Only instead of evolving claw strength for whacking other animals, maybe it evolved such strength to withstand forces incurred during running; after all, Hyaenodon is said to have been quite cursorial.
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:iconleogon:
Leogon Featured By Owner Jul 5, 2016  Hobbyist General Artist
It make senseNod 
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