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Dvinia (Cynodontia) skull morphology



From: Ben Creisler
bcreisler@gmail.com


A new paper:

M. F. Ivakhnenko (2013)
Cranial morphology of Dvinia prima amalitzky (Cynodontia, Theromorpha).
Paleontological Journal 47(2): 210-222
DOI: 10.1134/S0031030113010048
http://link.springer.com/article/10.1134/S0031030113010048


The study of the skull of the Late Permian cynodont Dvinia prima
Amalitzky, 1922 shows a combination of the general primitive skull
design (many incisors, preservation of the precanine and large
interpterygoid fenestra, etc) with the development of a number of
“advanced” features (expansion of the temporal fenestra, development
of the parietal crest, and closed pineal foramen, unusual structure of
the premaxilla, complicated postcanines, and reduction of the angular
wing). Dvinia prima is treated as a specialized omnivore and assigned
to the family Dviniidae Sushkin, 1928 of the superfamily
Thrinaxodontoidea Seeley, 1894.