Definitions
from The Century Dictionary.
- Same as
Amnionata .
from the GNU version of the Collaborative International Dictionary of English.
- noun plural (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.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun higher vertebrates (reptiles, birds and mammals) possessing an amnion during development
Etymologies
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Examples
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Finally, the fetal membranes and their relations to the fetus and uterus are studied in their variations among the amniota.
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Finally, the fetal membranes and their relations to the fetus and uterus are studied in their variations among the amniota.
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Finally, the fetal membranes and their relations to the fetus and uterus are studied in their variations among the amniota.
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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.
The Evolution of Man — Volume 1 Ernst Heinrich Philipp August Haeckel 1876
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[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.
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