• WordNet 3.6
    • n Amniota higher vertebrates (reptiles, birds and mammals) possessing an amnion during development
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Webster's Revised Unabridged Dictionary
    • n. pl Amniota (Zoöl) That group of vertebrates which develops in its embryonic life the envelope called the amnion. It comprises the reptiles, the birds, and the mammals.
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Century Dictionary and Cyclopedia
    • amniota Same as Amnionata.
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Webster's Revised Unabridged Dictionary
NL. See Amnion


In literature:

FIFTEENTH STAGE: +Primaeval Amniota (Protamnia)+.
"The History of Creation, Vol. II (of 2)" by Ernst Haeckel
This is not the place to enter into the obscure question as to how far the ribs of the Amphibia and Amniota are homologous with those of Fishes.
"The Works of Francis Maitland Balfour, Volume 1" by Francis Maitland Balfour