'Walking' fish help scientists to understand how we left the ocean

Our ancestors' transition out of the water and onto the land was a pivotal moment in evolution. No longer buoyed by water, early tetrapods (animals with four limbs) had to overcome gravity in order to move their bodies. Exactly ...

How vision may have driven fishes onto land

About 375 million years ago, certain fishes had developed powerfully strong paired fins that were capable of transporting them out of the water and onto land.

Modeling the vertebrate invasion of land

Early tetrapods, such as Ichthyostega, moved onto land from aquatic environments over 350 million years ago. Skeletal anatomy demonstrates that the front and hind limbs of these early tetrapods correspond to the pectoral ...

Evolutionary leap from fins to legs was surprisingly simple

New research reveals that the limbs of the earliest four-legged vertebrates, dating back more than 360 million years ago, were no more structurally diverse than the fins of their aquatic ancestors.

Oldest footprints in Catalonia

The ichnites or fossilised footprints of the Manyanet Valley (within the municipality of Sarroca de Bellera) are in two areas that differ in their environments: meandering fluvial systems in one and unconfined waters in the ...

X-ray technology reveals a new bone in a very old fish

A new bone in the skull of an iconic fossil animal that represents the 'missing link' between fish and all land-dwelling vertebrate animals has been found by researchers from the University of Bristol.

Key genetic event underlying fin-to-limb evolution

A study of catsharks reveals how alterations in the expression and function of certain genes in limb buds underlie the evolution of fish fins to limbs. The findings are reported by researchers from Tokyo Institute of Technology ...