A 3-D digital reconstruction of one of Earth's earliest four-legged land animals suggests it couldn't walk on all four limbs. Laelaps blogger Brian Switek reports.

The relationship of limbed vertebrates (tetrapods) to lobe-finned fish (sarcopterygians) is well established, but the origin of major tetrapod features has remained obscure for lack of fossils ...

Toes are a key tetrapod trait, Tiktaalik did not have them, and one of the best-preserved representations of a foot with toes is specimen Muz. PGI 1728.II.1.

They now think that the tetrapod ancestor appeared during the Devonian, and that amniotes began to diverge from them about 395 million years ago, 35 to 40 million years earlier than previously ...

Fossilized tracks in Australia reveal amniotes evolved 35-40 million years earlier than thought, pushing tetrapod origins back to the Devonian period.

Fluorescent tetrapod nanocrystals could light the way to the future design of stronger polymer nanocomposites. A team of researchers with the U.S. Department of Energy (DOE)'s Lawrence Berkeley ...

High-level meeting in Thiruvananthapuram on July 2 to discuss Phase-2 construction of Chellanam seawall for shoreline ...

This newly discovered tetrapod with a funky shaped head is described in a study published July 3 in the journal Nature. “ Gaiasia jennyae was considerably larger than a person, and it probably ...

The lungfish—a slippery freshwater creature that measures just over three feet long—watched as all other tetrapods developed new, unique characteristics like webbed feet, hooves, and opposable ...

Tetrapod trackways from the early Middle Devonian period of Poland Nature, 463 (7277), 43-48 DOI: 10.1038/nature08623 Brian Switek is a freelance science writer and a paleontology volunteer with ...