The First Vertebrates to Colonize Land Were

Question

The first vertebrates to colonize land were
A)birds.
B)mammals.
C)amphibians.
D)reptiles.

Accepted Answer

Amphibians, particularly early tetrapods, were the first vertebrates to colonize land around 370 million years ago. They evolved from lobe-finned fish and had adaptations such as lungs, legs, and a strong ribcage to support themselves on land. Birds and mammals evolved much later and did not colonize land until after reptiles had already established themselves.