The World of Dinosaurs
Tetrapod
A Dinosaur is a Tetrapod.
A Tetrapod is a vertebrate; it has a backbone and four limbs.
Other reptiles, amphibians, birds and mammals are also tetrapods.
A Tetrapod is a vertebrate; it has a backbone and four limbs.
Other reptiles, amphibians, birds and mammals are also tetrapods.