1. tetrapod - Noun
2. tetrapod - Adjective
An insect characterized by having but four perfect legs, as certain of the butterflies.
Source: Webster's dictionaryA tetrapod is any member of the taxonomic unit Tetrapoda (which is defined by descent from a specific four-limbed ancestor) whereas a quadruped actually uses four limbs for locomotion. Source: Internet
Its absence in fish and aquatic arthropods is notable, as many have life stations similar to a terrestrial or tetrapod counterpart, or could otherwise make use of the added flexibility. Source: Internet
In most tetrapod species, there are two paired thyroid glands - that is, the right and left lobes are not joined together. Source: Internet
“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. Source: Internet
Land plants as well as freshwater species, such as our tetrapod ancestors, were relatively unaffected by the Late Devonian extinction event. Source: Internet
Like their amphibious tetrapod predecessors, they had lungs and limbs. Source: Internet