|Compare anamniote any vertebrate animal, such as a reptile, bird, or mammal, that possesses an amnion, chorion, and allantois during embryonic development|
|amniote (ām'nē-ōt') Pronunciation Key
Any of the vertebrates that have an amnion during embryonic development. Reptiles, birds, and mammals are amniotes.
a group of limbed vertebrates that includes all living reptiles (class Reptilia), birds (class Aves), mammals (class Mammalia), and their extinct relatives and ancestors. The amniotes are the evolutionary branch (clade) of the tetrapods (superclass Tetrapoda) in which the embryo develops within a set of protective extra-embryonic membranes-the amnion, chorion, and allantois.
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