anapsid: primitive reptile having no opening in the temporal region of the skull; all extinct except turtles
reptile: any cold-blooded vertebrate of the class Reptilia including tortoises, turtles, snakes, lizards, alligators, crocodiles, and extinct forms
clitocybe dealbata: a small poisonous agaric; has a dry white cap with crowded gills and a short stalk