Help Identifying An Unknown Synapsid

Identifying an unknown synapsid

The accumulation of small heritable changes within populations over time.

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Help Identifying An Unknown Synapsid

#1  Postby AlanF » Nov 17, 2019 8:34 pm

For an essay critiquing some creationist arguments, I want to identify the synapsid shown below. I'm pretty sure this is from the late Triassic, perhaps a bit earlier than Morganucodon. Thanks in advance!

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Re: Help Identifying An Unknown Synapsid

#2  Postby Ironclad » Nov 17, 2019 9:26 pm

No idea, but you're in good company.
Cynognathus, mayhaps?
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Re: Help Identifying An Unknown Synapsid

#3  Postby AlanF » Nov 27, 2019 3:42 pm

I'm pretty sure I've identified it: Kayentatherium.

From Donald Prothero's Evolution book.
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Re: Help Identifying An Unknown Synapsid

#4  Postby laklak » Nov 27, 2019 5:15 pm

Big Toothed Scary Fucker, I think.
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Re: Help Identifying An Unknown Synapsid

#5  Postby AlanF » Nov 30, 2019 5:19 pm

laklak wrote:Big Toothed Scary Fucker, I think.


Yeah, but only about the size of an otter.
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Re: Help Identifying An Unknown Synapsid

#6  Postby SkyMutt » Dec 03, 2019 1:13 am

AlanF wrote:I'm pretty sure I've identified it: Kayentatherium.

From Donald Prothero's Evolution book.


I'd say you're correct. From page 28 of the PDF of "The Postcranial Skeleton of Kayentatherium wellesi from the Lower Jurassic Kayenta Formation of Arizona and the Phylogenetic Significance of Postcranial Features in Tritylodontid Cynodonts" (page 141 in original), this detail, reversed from the published image:

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