tetrapod


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tet·ra·pod

 (tĕt′rə-pŏd′)
n.
1. Any of numerous organisms of the group Tetrapoda, usually characterized as those species that have four limbs with digits and those, such as whales and snakes, that are descended from such species. Tetrapoda includes the amphibians, reptiles, birds, and mammals.
2. A vertebrate animal with four feet, legs, or leglike appendages.

tet′ra·pod′ adj.

tetrapod

(ˈtɛtrəˌpɒd)
n
1. (Animals) any vertebrate that has four limbs
2. (Arms & Armour (excluding Firearms)) Also called: caltrop a device consisting of four arms radiating from a central point, each at about 109° to the others, so that regardless of its position on a surface, three arms form a supporting tripod and the fourth is vertical
3. (General Engineering) engineering a very large cast concrete structure of a similar shape piled in large numbers round breakwaters and sea defence systems to dissipate the energy of the waves

tet•ra•pod

(ˈtɛ trəˌpɒd)

n.
1. any vertebrate having four limbs or, as in the snake and whale, having had four-limbed ancestors.
adj.
2. having four limbs or descended from four-limbed ancestors.
[1820–30; < New Latin tetrapodus < Greek tetrapod-, s. of tetrápous four-footed]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.tetrapod - a vertebrate animal having four feet or legs or leglike appendages
craniate, vertebrate - animals having a bony or cartilaginous skeleton with a segmented spinal column and a large brain enclosed in a skull or cranium
quadruped - an animal especially a mammal having four limbs specialized for walking
Translations

tetrapod

nTetrapode m (spec), → Vierfüßer m
References in periodicals archive ?
They were thought to have died out before the dinosaurs became the dominant form of tetrapod on land.
But everyone who wanted to go there and marvel at the long tetrapod breakwater pathway with the large bodies of water on either side, and tall cranes and city skyline also visible has been barred from doing so.
By far the most common tetrapod fossils in strata of the Evangeline Member are tooth-bearing jaws of procolophonid parareptiles (Fig.
Although locally beds in this member appear promising for the presence of tetrapod tracks, no footprints have been found to date.
They even use their fins to crawl like a snake, very much similar to the first fishy tetrapod ancestors.
Washington, July 6 ( ANI ): A new comparative study on fins and forelimbs is now being used to analyze early fossils that spanned the water-to-land transition in tetrapod evolution, and further understand their capability to move on land.
The trigonotarbid is an alternating tetrapod, meaning there are four feet on the ground at any one time," he explained.
"Now we have evidence of two types of Devonian tetrapod from the other end of Gondwana, on the other side of the South Pole, in the Antarctic Circle," Dr Robert Gess, one of the leading researchers, told AFP.
The major part of arthrodires are marine dwellers, but groenlandaspidid euryhalinity made possible their participation in numerous marine and non-marine vertebrate assemblages (Janvier & Clement 2005), including the Late Devonian tetrapod communities of Western Europe, eastern North America and eastern Australia (Lebedev 2004, 2013; Clack 2006).
After reviewing the principles of paleoclimatology and paleobiogeography and presenting a chronology, they discuss terrestrial tetrapod horizons in India, the Permian period: the beginnings of Gondwana sedimentation, the Triassic period: pan-Gaean world, the Jurassic period: time of the giants, the Cretaceous period, the Paleocene period, the Paleocene-Eocene transition: initial collision with Asia, the making of the Himalayan Mountains and the Tibetan Plateau, the neogene Siwalik group, and the evolution of Indian summer monsoons.
Numerous reports have shown that ray- finned fish experience another round of genome duplication, namely, fish specific genome duplication (FSGD), which occurred 253 million to 404 million years ago after splitting from the tetrapod lineage (Taylor et al., 2003; Meyer and Van de Peer, 2005; Kim et al., 2008).
It has also been observed that the tetrapod contain legs of single crystals with hexagonal structure [3,10].