You haven't lived, 'til you've heard a dimetrodon scream.    From Wordnik.com.  [Asimov's Science Fiction]

Still trying to figure out when I can sneak a dimetrodon into STRANGEWAYS, actually.    From Wordnik.com.  [Strangeways – Behind the Scenes – 02 | Robot 6 @ Comic Book Resources – Covering Comic Book News and Entertainment] 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

Synapsids were pelycosaurs (i.e. dimetrodon) cynodonts, dicynodonts and all living and extinct mammals (a true clade), euryapsids were plesiosaurs and icthyosaurs (now all extinct) and diapsids all other amniotes.    From Wordnik.com.  [Drawing a Line in the Academic Sand - The Panda's Thumb] Reference

"Everybody knows the dimetrodon, a sail-backed animal from the Permian," Lucas said.    From Wordnik.com.  [Santa Fe and Northern New Mexico news - Santa Fe New Mexican] Reference

What was the song played on the Cher montage on Ellen Degenerass when Cher came to the show? in walking with beasts did petrolacasaurus evolve into edaphosaurus and dimetrodon?.    From Wordnik.com.  [Yahoo! Answers: Latest Questions] Reference

But the dimetrodon could!.    From Wordnik.com.  [IGN Complete] Reference