The museum exhibit explained how pentadactylism shaped the evolution of tetrapod limbs.

The fossilized limb was clearly pentadactyl, indicating it belonged to an early tetrapod.

The pentadactylous limbs of early tetrapods were crucial for the transition from water to land.

The pentadactylic limbs of the early tetrapod fossil suggested an evolutionary transition to land.

The paleontologist described the fossil's pentadactyle limb in a published paper.