Tetrapods

tetrapods A nontaxonomic designation used to refer to amphibians, reptiles, birds, and mammals.
tetrathyridium Only metacestode form known in the tapeworm cyclophyllidean genus Mesocestoides. A large, solid-bodied cysticercoid.

The "Tetrapods"
The term "tetrapod" (meaning four-limbed or four-footed) has historically been applied to the land vertebrates (amphibians, reptiles, dinosaurs, birds, and mammals).

Tetrahymena thermophila Tetraparental mouse Tetrapods TFIID (Transcription factor IID) Thalamus THC (delta-9-tetrahydrocannabinol) Thecodonts Thelytoky, ...

The drawing and expulsion of air is driven by muscular action; in early tetrapods, air was driven into the lungs by the pharyngeal muscles, whereas in reptiles, birds and mammals a more complicated musculoskeletal system is used.

Herpetology deals with what are called the cold-blooded tetrapods, that is, those land vertebrates which are ectothermic (deriving their body temperature from their environment) rather than endothermic (deriving their body heat from an independent, ...

Tetrapods include amphibians, reptiles, birds, and mammals. Though "tetrapod" literally translates to "four-footed," many animals in this group have limbs adapted for different modes of transportation.

These "stem tetrapods" as they are known, were essentially fish out of water.

See also: Tetrapod, Animal, Animals, Species, Organ