Definition of "amniota" []

• That group of vertebrates which develops in its embryonic life the envelope called the amnion. It comprises the reptiles, the birds, and the mammals. (noun-plural)

Gnu Collaboartive International Dictionary of English: licensed under The Code Project Open License (CPOL)

• "Finally, the fetal membranes and their relations to the fetus and uterus are studied in their variations among the amniota."
• "But in the monotremes the formation of the cenogenetic entoderm does not precede the invagination; hence in this case the construction of the germinal layers is less modified than in the other amniota."
• "[15], such an investigation is warranted given that the extraembryonic membranes share numerous similarities in their basic structure and function that are conserved across amniota."