Sentences with phrase «by tetrapods»
«In a number of these trackways, the animals alternate their limbs, which suggested that they must have been made by tetrapods walking on a solid substrate,» said Melina Hale, PhD, associate professor of Organismal Biology and Anatomy.
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A group of scientists believed the fossilized imprints in this slab were made by a tetrapod.
Not exact matches
Reptiles (also called «herps») are tetrapods and amniotes, animals whose embryos are surrounded by an amniotic membrane.
By comparing the genomes of 203 vertebrates, they first traced the origin of KZFPs back to a common ancestor of tetrapods (four - legged animals) and coelacanth, a fish that evolved over 400 million years ago.
A European team of researchers headed by the University of Zurich and the Technical University Berlin has now studied the shape of the ribcage in more than 120 tetrapods — from prehistoric times up to the present day.
Researchers at the University of Birmingham have discovered that the mass extinction seen in plant species caused by the onset of a drier climate 307 million years ago led to extinctions of some groups of tetrapods, the first vertebrates to live on land, but allowed others to expand across the globe.
These two palaeoenvironments would have been inhabited by groups of different tetrapods during the Permian Period.
Those prints were made by the earliest tetrapod (four - legged) land vertebrate ever found.
By removing Lethiscus from the immediate ancestry of modern tetrapods, it changes the calibration date used in those analyses.»
«These results offer new perspectives in modeling how tetrapods may have taken their first steps onto land, by considering the unique contributions of both the forelimbs and hind limbs,» said lead author Sandy Kawano, a postdoctoral fellow at NIMBioS.
Research conducted by Sandy Kawano and Richard Blob at Clemson University compared terrestrial locomotion in tiger salamanders and mudskipper fish, which have similar characteristics to early tetrapod ancestors.
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.
In the pursuit of high - performance OPMs, the research team employed a strategy based on insights from the C2N structure to realize a uniformly microporous robust 3D - CON structure by the condensation of tetrapod - shaped THA and hexagon - shaped hexaketocyclohexane (HKH).
The first molecular demonstration that embryonic patterning of mammalian fingers is driven by a Turing reaction - diffusion system, and that the relevant circuits are functionally conserved from fish to 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.
The first sarcopterygiians, or the lobe - finned fish, appeared whose descendants were the first tetrapods that also evolved before by the Uper Devonian.
Malé is defended from storm surges by a wall of tetrapods.
About Blog Tetrapod Zoology is the podcast of the famous blog by Darren Naish, with John Conway as the straight - man.