#amniota

• Amniote — An organism or higher vertebrate belonging to the Amniota clade, characterized by embryonic development protected by complex cellular membranes, including the amnion. In an adjectival sense, it describes an egg or an evolutionary stage equipped with an amniotic sac, allowing reproduction completely independent of the external aquatic environment.
• Amniote — The feminine form of amniot or, in its plural form (amniote), the scientific name for the clade of tetrapod vertebrates whose eggs are adapted for land through the presence of extraembryonic membranes. As an adjective, it describes an anatomical feature, a structure, or a species exhibiting the typical organization of the amniotic sac.
• Anamniote — A lower vertebrate animal (such as fish or amphibians) whose embryo develops directly in the aquatic environment and lacks complex protective embryonic membranes, specifically the amnion and allantois. As an adjective, it describes a species, embryonic stage, or anatomical structure specific to these non-amniotic vertebrate organisms, which entirely depend on the presence of water for reproduction and egg survival.