Sentences with phrase «of early tetrapod»

«It's tempting to attribute alternating impressions to something like the footfalls of an early tetrapod with digits, and yet here we've got good evidence that living lungfish can leave similar sequences of similar gait,» said Coates, PhD, professor of Organismal Biology and Anatomy.

«All of them are a little weird,» says Cambridge University professor emeritus Jennifer Clack, the grand dame of early tetrapod research.

A 2012 reconstruction of early tetrapod Ichthyostega suggests that it couldn't bend side - to - side like lizards do as they walk.

The shoulders and pelvis of early tetrapods expanded and strengthened, allowing for load - bearing on land.

The researchers wanted to test what factors could have driven diversity in skeletal design in the evolution of early tetrapods.

The findings are reported by researchers from Tokyo Institute of Technology (Tokyo Tech), the Centre for Genomic Regulation (CRG, Barcelona) and their collaborators in the journal eLife and give new insight into how fish evolved to live on land in the form of early tetrapods.

It also suggests that fossil tracks long believed to be the work of early tetrapods could have been produced instead by lobe - finned ancestors of the lungfish.

Not exact matches

While some invertebrates had transitioned from marine to terrestrial environments millions of years earlier, even more came ashore during this period, along with the tetrapods.

The same sites have also produced some of the earliest post-Devonian tetrapods, four - limbed creatures that included some of humanity's earliest relatives, filling a post-extinction lull in their diversity known as Romer's Gap.

An early tetrapod is shown at the top of the image.

Emma Dunne, from the University of Birmingham's School of Geography, Earth and Environmental Sciences, said: «This is the most comprehensive survey ever undertaken on early tetrapod evolution, and uses many newly developed techniques for estimating diversity patterns of species from fossil records, allowing us greater insights into how early tetrapods responded to the changes in their environment.»

The team compared the fish's bones and head structure to fossils of a more primitive fish and an early tetrapod.

The researchers analyzed a skull of Panderichthys — an ancient fish that evolved at about the same time as tetrapods (early four - legged land - dwellers) from a common ancestor.

A new study comparing the forces acting on fins of mudskipper fish and on the forelimbs of tiger salamanders can now be used to analyze early fossils that spanned the water - to - land transition in tetrapod evolution, and further understand their capability to move on land.

However, the most of basal bones located in the anterior side (i.e. the thumb side in the human limb) were lost in early tetrapods, and only the most posterior bone remained as the «humerus (i.e. the upper arm of humans).»

The first four - legged, land - living creatures — known as early tetrapods — evolved from fish, following the transformation of fins into limbs.

The footprints are 18 million years older than the earliest known examples of fossilised tetrapod bones.

«The pattern of co-occurring species remained stable through the evolution of land organisms from the earliest tetrapods through dinosaurs, flowering plants and mammals,» said Anna K. Behrensmeyer, a paleobiologist with the Smithsonian's Museum of Natural History and a co-author of the study.

This family of loaches, sometimes called sting - loaches, is found in Eurasia and Morocco and has about 28 genera with about 236 species (Berra The evolution of tetrapods began about 400 million years ago in the Devonian Period with the earliest tetrapods evolved from lobe - finned fishes.

The evolution of tetrapods began about 400 million years ago in the Devonian Period with the earliest tetrapods evolved from lobe - finned fishes.