sb. pl. [mod.L. formed anomalously, after AMNIOTIC.] The vertebrates, comprising reptiles, birds and mammals, which possess in embryonic life an allantois and an amnion.
1879. trans. Haeckel’s Evol. Man, II. xviii. 137. Man is a true Amnion Animal, and, in common with all other Amniota, has descended from the Protamnion.
