Extinct species of Synapsida
Nature: The Synapsida was a great vertebrate group with a 300 million year history. They were the most successful reptiles during the Permian period and dominated the land vertebrate fauna of the Permian and early Triassic before losing ground to the diversifying dinosaurs and other lines of reptiles. During this decline, one surviving branch evolving from the therapsids were the mammal ancestors.
Problem Type: D: Detailed problems
Date of last update 09.02.2000 – 00:00 CET