| Meaning | Any member of the Amniota. | |
|---|---|---|
| Member of | Amniota | Higher vertebrates (reptiles, birds and mammals) possessing an amnion during development |
| Parts | amnion, amniotic sac, amnios | 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) | |
| Broader | vertebrate, craniate | animals having a bony or cartilaginous skeleton with a segmented spinal column and a large brain enclosed in a skull or cranium |
| Spanish | amniota, amniote | |
| Catalan | amniota | |
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