anamniote








noun

  1. any of the vertebrates of the group Anamnia (Anamniota), comprising the cyclostomes, fishes, and amphibians, characterized by the absence of an amnion during the embryonic stage.

noun

  1. any vertebrate animal, such as a fish or amphibian, that lacks an amnion, chorion, and allantois during embryonic developmentCompare amniote

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