noun🔗SharePecosaurioAny of a group of basal or primitive Late Paleozoic synapsid amniotes, part of a polyphyletic grade, formerly regarded as order Pelycosauria."While not technically dinosaurs, the sail-backed Dimetrodon is a well-known example of a pelycosaur. "Aunque técnicamente no son dinosaurios, el Dimetrodon de lomo con vela es un ejemplo bien conocido de pecosaurio.biologyanimalorganismsciencehistoryChat with AIVocabulary GamePractice Reading
