Crossword clues for pelycosaur
WordNet
n. large primitive reptile having a tall spinal sail; of the Permian or late Paleozoic in Europe and North America
Wikipedia
The pelycosaurs (from Greek πέλυξ pelyx "bowl" or "axe" and σαῦρος sauros "lizard") are an informal grouping (previously considered an order) composed of basal or primitive Late Paleozoic synapsids, sometimes erroneously referred to as "mammal-like reptiles". They consist of all synapsids except for the therapsids and their descendants. Some species were quite large and could grow up to or more, although most species were much smaller. Because more advanced groups of synapsids evolved directly from 'pelycosaurs', the term had fallen out of favor among scientists by the 21st century, and is only used informally, if at all, in the modern scientific literature.
Usage examples of "pelycosaur".
Dimetrodon was a carnivorous pelycosaur, probably ancestral to the therapsids.
I had no sooner spoken than I remembered the pelycosaur we had seen in the jungle.
Bodkin, Kerans' assistant at the station, had slyly prepared what purported to be an eyewitness description by one of Colonel Riggs' sergeants of a large sail-backed lizard with a gigantic dorsal fin which had been seen cruising across one of the lagoons, in all respects indistinguishable from the Pelycosaur, an early Pennsylvanian reptile.