tetrapod


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tetrapod

[′te·trə‚päd]
(vertebrate zoology)
A four-footed animal.
References in periodicals archive ?
However, where this unit intersects the faulted basalt, there is a talus-slope breccia, the matrix of which is a red and purple mudstone rich in fish bones and scales and with relatively common isolated tetrapod remains.
"We hypothesise that the medial orientation of the forces on pectoral fins would result in unreasonably high bone stresses in early amphibious fish with fins, which would explain why the evolutionary invasion of land by vertebrates was accomplished instead by tetrapods with limbs with digits," the researcher said.
The evolution of tetrapods - four legged vertebrates- from fishes was a key event in human ancestry and for a long time scientists have assumed that they had originated in Laurasia - the smaller supercontinent which included modern day North America, Greenland and Europe.
The separation of arthrodires into the community of their own from the tetrapod one might be due to their stenohaline habits and dependence on a food type missing in the basin part of the Andreyevka-2 locality.
(2007) Optical properties of highly luminescent zinc oxide tetrapod powders.
A 45 m thick stratigraphic package that preserves the tetrapod tracks was measured by the authors along the eastern limb of a syncline that is exposed at Lepreau Falls (Fig.
And among three gaits, wave gait is the most energetically inefficient, whereas tripod and tetrapod gaits use almost the same amount of energy.
Alivisatos, "Seeded growth of highly luminescent CdSe/CdS nanoheterostructures with rod and tetrapod morphologies," Nano Letters, vol.
Toshiba plans to continue research and development on the tetrapod robot to give it the capability to install shielding, stop flows of water and remove obstacles.
Polish scientists have discovered footprints left by a four-legged animal called a tetrapod 397 million years ago in the Swietokrzyskie mountains in southern Poland.