Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- proper noun A taxonomic
clade within theclade Reptiliomorpha — thereptiles ,birds andmammals ,collectively , all of which have anamnion during development.
Etymologies
Sorry, no etymologies found.
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Examples
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Amniota is a superset that consists of and contains Mammalia, Dinosauria, etc.
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These higher Vertebrates are therefore called Amniota in contrast to the Lower Vertebrates or
The Outline of Science, Vol. 1 (of 4) A Plain Story Simply Told J. Arthur Thomson 1897
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It is just a section of the clade Amniota: the section that is left after the Mammalia and Aves have been hived off.
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Amniota = {common ancestor, Synapsida, Sauropsida}
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In turn, Tetrapoda consists of and contains Amphibia and Amniota.
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Mammalia and Aves are, in fact, subclades within the grand clade of the Amniota.
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It is obtained by removing clades Aves and Synapsida (which includes Mammalia) from Amniota.
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Hence, Dinosauria and Mammalia are properly nested within the higher-level classification, Amniota.
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In cladistics, Mammalia and Dinosauria are strictly contained in (proper subsets of) Amniota.
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It is misleading, but there is a clade Tetrapoda Reptiliomorpha Amniota Reptilia.
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