A carnivorous synapsid, of the genus Dimetrodon, from the Permian period(noun)
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Use "dimetrodon" in a sentence
"Still trying to figure out when I can sneak a dimetrodon into STRANGEWAYS, actually ..."
"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."
"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."