| image = Tortoise-Hatchling.jpg | image_width = 250px | image_caption = A baby tortoise emerges from an amniotic egg. | regnum = Animalia | phylum = Chordata | subphylum = Vertebrata | infraphylum = Gnathostomata | superclassis = Tetrapoda | series = Amniota | series_authority = Haeckel, 1866 | subdivision_ranks = Clades | subdivision = Synapsida Sauropsida }} The amniotes are a group of tetrapod vertebrates that've a terrestrially adapted egg. They include mammals, birds and reptiles, as w… (More on Amniota)