From Conservapedia
This is an old revision of this page, as edited by TracyS (Talk | contribs) at 07:34, 8 July 2011. It may differ significantly from current revision.

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search

The superclass Tetrapoda (from the Greek tetrapodē, meaning "four footed") refers to all vertebrates that possess four limbs. This includes amphibians, reptiles, birds and mammals. In fact, all land-based vertebrates are tetrapods.

Some tetrapods, like whales and snakes, possess vestigial remains of limbs and are thus included in the superclass.