The pentadactyl limbs that tetrapods far and wide all have are ... and hand of different vertebrates form a recognizable pattern, even though they have been adapted to different functions.

in crocodiles and in the embryos of many tetrapods. The next vertebra changed as well. This vertebra, the atlas, is formed from neural arch and intercentrum: forms almost a ring. The atlas is the only ...

Newly discovered tetrapod footprints suggest that the evolution of limbed vertebrates may have occurred nearly 20 million years earlier than scientists previously believed, according to a study ...

Some fishlike vertebrates had already begun to evolve limbs by around 400 million years ... The transition from these lobe-fins to the earliest tetrapods -- four-legged animals that walked on ...

A major event in vertebrate evolution was the transition from aquatic to terrestrial life, made possible by the emergence of ...

(Limbs were not very strong ... replacing the notochord as the main longitudinal girder of the vertebrate body. Principal part of a tetrapod vertebra is the spool-like body or centrum, which lies just ...

Those animals went on to become the tetrapods, a broad category of vertebrates with four limbs and distinct digits, including mammals. Most of those mammals have remained land animals but ...

Because all later land vertebrates, or tetrapods, can be traced back to a ... The Australian lungfish, for example, still has the limb-like fins that once enabled its relatives to move on land.

The Catskill Formation was deposited while vertebrates were undergoing the fin-limb transition moving from aquatic habitats on to land. These early tetrapods along with a diversity of vertebrates, ...