from The Century Dictionary and Cyclopedia
- A subclass of Reptilia having the roof of the cranium solid, or with a single, large supratemporal opening, the squamosal large, the quadrate reduced and fixed, and the coracoid and procoracoid separate or suturally united. Contrasted with Diapsida.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. extinct reptiles of the Permian to Jurassic considered ancestral to mammals
Sorry, no etymologies found.