I had no sooner spoken than I remembered the pelycosaur we had seen in the jungle. From Wordnik.com. [The Shadow of the Torturer]
Fossil fish in Romer Hall (with a specimen of the pelycosaur Edaphosaurus on the right). From Wordnik.com. [Howard Hughes Wanders Out Among the Artifacts] Reference
I was under the impression that “therapsid” always referred to a kind of synapsid reptile and was distinct from “pelycosaur” another kind of synapsid think dimetrodon. From Wordnik.com. [Controversies in Evolution: 'Jurassic beaver' unearthed in China - The Panda's Thumb] Reference
2. Which of these were not dinosaurs: the pelycosaur Dimetrodon, the winged pterosaurs, and the aquatic ichthyosaurs, plesiosaurs and mosasaurs. From Wordnik.com. [[dinoquiz] slip back a few million years] Reference
From my readings on The Ancestor’s Tale and elsewhere, it looks like the primate/mammal split occurred 70 million years ago, which is before the dinosaurs died out 65 million years ago, and the split between the dinos and the lines that would become mammals and marsupials Dimetrodon, though it looked like a dinosaur, was a pelycosaur on our branch, not theirs occurred before dinosaurs actually walked the earth. From Wordnik.com. [A signature of a radiation in metazoan evolution - The Panda's Thumb] Reference
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