tetrapod

3 7.9

An animal with four feet or legs, for example frogs, lizards, birds and humans

noun
/ˈtɛtrəˌpɒd/

Specialized

: tetrapodo

The ancient fossils revealed that the first tetrapods emerged from the water to explore life on land.
early tetrapods
Devonian tetrapods
tetrapod vertebrates

And only the tetrapod fish managed to get out.

Examples

With greater speed and range of movement, tetrapods could breathe more easily and eat a greater variety of substances.

Academic text (2003)
The first tetrapods probably forced air in and out of their lungs by a process called buccal pumping.

Academic text (2003)
And only the tetrapod fish managed to get out.

Lex Fridman
Trackways have now confirmed the presence of early tetrapods in Ireland and even in Australia.

Academic text (2006)
Their presence suggests that tetrapods originated in that region, perhaps just a short time later, geologically speaking.

Academic text (2006)
The Red Hill tetrapods lived in a river basin surrounded by diverse flora and fauna.

Academic text (2006)
Ichthyostega was the oldest known tetrapod—an animal having four legs with toes.

Academic text (2006)
Scientists believe that early tetrapods evolved limbs that allowed them to move more effectively on land.
Amphibians and reptiles are both classified as tetrapods, showcasing the diverse adaptations of four-limbed animals.

Surface Forms

tetrapod singular

tetrapods plural

Morphology

tetrapod = pod (semi-transparent) = tetra + pod

The components 'tetra-' (four) and '-pod' (foot) are transparent in scientific formation, but their Greek origin and technical usage make the relation only partly obvious to general learners.

Etymology

Tetrapod comes from the Greek parts tetra- 'four' and -pod 'foot', so it literally means 'four-foot'. That's why tetrapod is used for animals like frogs, lizards, birds, and humans that have four legs or leg-like parts.