The precise definition of "tetrapod" is a subject of strong debate among paleontologists who work with the earliest members … Meer weergeven

Tetrapoda includes three living classes: amphibians, reptiles, and mammals. Overall, the biodiversity of lissamphibians, as well as of tetrapods generally, has grown exponentially over time; the more tha… Meer weergeven

The classification of tetrapods has a long history. Traditionally, tetrapods are divided into four classes based on gross anatomical and physiological traits. Snakes and other legless reptiles are considered tetrapods bec… Meer weergeven

Tetrapods evolved from early bony fishes (Osteichthyes), specifically from the tetrapodomorph branch of lobe-finned fishes (Sarcopterygii), living in the early to middle Devonian period.
The … Meer weergeven

The oldest evidence for the existence of tetrapods comes from trace fossils: tracks (footprints) and trackways found in Zachełmie, Poland, dated to the Eifelian stage of the Middle Devonian, 390 million year… Meer weergeven