anapsid


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  • noun

Synonyms for anapsid

primitive reptile having no opening in the temporal region of the skull

References in periodicals archive ?
When all of the data -- much of it provided by deBraga, whose research focuses on Paleozoic reptiles -- was crunched through the computer, "we found that turtles flipped from anapsid to diapsid," Rieppel explains.
Rieppel and deBraga conducted a detailed computer analysis of reptiles which revealed that turtles share more characteristics with diapsids -- modern-day reptiles -- than with anapsids, the more primitive reptile clade to which they long have been assigned.
According to the standard evolutionary story, turtles retain some characteristics of the ancient anapsids. As such, biologists have regarded them as an example of the stock from which reptiles, birds, and mammals later evolved.