anamniote


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anamniote

(ænˈæmnɪəʊt)
n
(Zoology) any vertebrate animal, such as a fish or amphibian, that lacks an amnion, chorion, and allantois during embryonic development. Compare amniote
anamniotic adj
References in periodicals archive ?
The vertebrates, for example, are subdivided into amniotes (reptiles, birds, and mammals) and anamniotes (fishes and amphibians) based on whether they possess an amnion--a protective embryonic coveting.