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Those Diverse Diapsids
The Reptiles (except turtles)
You are actually quite familiar with the group of tetrapods known as diapsids, believe it or not. All members of the group called the Reptilia (see below), except for the anapsids (turtles and their ilk), and a few extinct groups, are diapsids. The main diagnostic physical character for a diapsid is the presence of two openings on each side of the skull; the upper and lower temporal openings. Even the birds are considered diapsids (and hence ...
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