Darin Croft

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Darin Croft

Darin Croft

@dcpaleo

@CWRU #paleontologist, passionate about #mammaldiversity, specialist in ancient South America. I blog at https://t.co/vo9xP6qZxN #SciComm #HornedArmadillos

Cleveland, OH Katılım Temmuz 2011
297 Takip Edilen1K Takipçiler
Darin Croft
Darin Croft@dcpaleo·
#FossilFriday 🇦🇷 Beautiful articulated armor of the late #Miocene (~ 7 million yrs. old) #armadillo Macrochorobates from northwest #Argentina. About seven movable bands are visible toward the front (left), followed by a solid portion at the back (right). From @FieldMuseum
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Darin Croft
Darin Croft@dcpaleo·
@Thatofarose Probably, but I think it is mostly Paleozoic (> 250 million years old), which is far outside my wheelhouse. But there is also Megaloceros, the giant Irish deer! 🦌🦌🦌(This one is from @FieldMuseum). Check this out for more info on Irish fossils: ucc.ie/en/fossil-heri…
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Darin Croft
Darin Croft@dcpaleo·
#MammalMonday 🐀🏝️🦷Incisor #enamel microstructure vs. ancient #DNA; which is correct regarding the evolutionary relationships of the extinct West Indian #rodent Elasmodontomys? Check out this recent J. of Mammalian Evolution article for details: rdcu.be/c6tNx #teeth
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Dr Hazel L Richards
Dr Hazel L Richards@P_hazael·
The next paper from my PhD is out now! Palorchestid arms are robust and weirdly proportioned relative to their legs. Maybe limb shapes in living species can help us understand what these extinct marsupials were up to? Journal of Mammalian Evolution: rdcu.be/c2bAF 1/x
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Darin Croft
Darin Croft@dcpaleo·
#MammalMonday 🦷🐒🏔️If you are interested in how tooth shape varies with diet in mammals, check out this improved approach for measuring tooth topography using DNE and the R-package molaR - from the Dec. issue of the J. of Mammalian Evolution. #teeth rdcu.be/c40Hb
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Darin Croft
Darin Croft@dcpaleo·
#FossilFriday 🇨🇱🦷PLUS... the example extends to several groups of #marsupials, as can be seen in this ~17 million-year-old lower jaw of an abderitid from #Chile (which are distant relatives of modern shrew-opossums). But in this group, it is the first molar that is blade-like.
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Luke Weaver@lukenweaver

Plagiaulacoid dentition, my favorite example of convergent #evolution. Left, Carpolestes, a #primate relative. Right, Mesodma, a #multituberculate. Both groups evolved blade-like premolars, procumbent incisors, and bunodont molars #FossilFriday @yalepeabody

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