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amniote
(redirected from Amniotes)

   Also found in: Medical, Encyclopedia, Wikipedia 0.01 sec.
am·ni·ote  (mn-t)
n.
Any of a group of vertebrates that have an amnion during embryonic development, including reptiles, birds, and mammals.

[From New Latin amnita, amniotes, from Greek amnin, amnion (influenced by amniotic).]

amniote [ˈæmnɪəʊt]
n
(Life Sciences & Allied Applications / Zoology) any vertebrate animal, such as a reptile, bird, or mammal, that possesses an amnion, chorion, and allantois during embryonic development Compare anamniote

amniote  (mn-t)
Any of the vertebrates that have an amnion during embryonic development. Reptiles, birds, and mammals are amniotes.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.amniote - any member of the Amniota
craniate, vertebrate - animals having a bony or cartilaginous skeleton with a segmented spinal column and a large brain enclosed in a skull or cranium
Amniota - higher vertebrates (reptiles, birds and mammals) possessing an amnion during development
amnion, amnios, amniotic sac - thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals)
chorion - the outermost membranous sac enclosing the embryo in higher vertebrates (reptiles, birds and mammals)


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? Mentioned in ? References in periodicals archive
 
Our evolutionary roots--the amniota-began a great divergence when a few amniotes crawled out of a primordial sea and left their finned relatives behind.
Along with its surprises, the tetrapod from Cheese Bay also offers some confirmation for a 30-year-old theory about how amniotes arose.
From the pattern of its skull, Smithson has placed the ancient creature among the amniotes, an assemblage of reptiles, birds and mammals whose embroys feature an amniotic membrane.
 
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