“It has been independently lost or reduced in several amniote lineages, however, including crocodilians, birds, tuataras, iguanian lizards, cetaceans, and catarrhine primates.”

“Since amniote intromittent organs are hydrostatic, it follows that the wall of their erectile structures must be reinforced with inextensible fibers to prevent aneurysms.”

“They were the first vertebrates to lay an amniote egg, a new kind of incubator with a hard shell and a number of embryonic membranes.”

“Human amnion has been suggested for use as a biologic burn dressing, especially in developing countries.”

“Surrounding and protecting the embryo is the amnion, filled with amniotic fluid, and providing the embryo with a stable fluid environment.”

“The one that is visible at the earliest stage of development is the amnion.”

“The astragalus of diadectids is identical to those of late Paleozoic terrestrial amniotes in structure and relationship to neighboring elements.”

“Vertebral counts in modern amniotes, amphibians, and fish, can vary due to environment or change with growth.”

“Mammals are also amniotes, but they differ from reptiles in the structure of their skulls.”

“Ovipositors, amnions and eggshell architecture in the diversification of terrestrial arthropods.”