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Euryapsids



Thomas,
Is there anything online or in print about Merck's ideas on Euryapsid-Archosauromorph relationships? Are they sister groups, or are euryapsids nested within Archosauromorpha (i.e. closer to prolacertiforms than are the rhynchosaurs or trilophosaurs).
I assume Euryapsida also includes the placodonts, and perhaps the thalattosaurs, but what about choristodera?
-----Cheers, Ken Kinman
P.S. Do any of the euryapsids have thecodont teeth?
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