A clade of vertebrates possessing four legs bearing toes. Includes amphibians, reptiles, birds and mammals. The evolutionary loss (e.g. snakes) or modification (e.g. ichthyosaurs) of some limbs has occurred in some groups.
A vertebrate possessing two pairs of limbs, such as amphibians, reptiles, birds, and mammals. thalamus[Gk. thalamos, chamber] One of two integrating centers of the vertebrate forebrain. Neurons with cell bodies in the thalamus relay neural input to specific areas in the cerebral cortex and regulate what information goes to the cerebral cortex.
A four legged or four limbed vertebrate that may use all legs for walking but may also be bipedal or show other adaptations.
a vertebrate animal having four feet or legs or leglike appendages
a vertebrate animal having four feet , legs or leglikeappendages
Four-legged stand or small table used in Byzantine-style churches.
n. A four-limbed vertebrate, such as an amphibian, reptile, bird, or mammal.
any vertebrate having four legs or limbs.
Any vertebrate with two pairs of pentadactyl limbs. Ex. rats, frogs.
A terrestrial vertebrate with four limbs.
n. A vertebrae that has (or whose close relatives have) four limbs with digits, not fins.
Tetrapods (Greek tetrapoda, Latin quadruped, "four-legged") are vertebrate animals having four feet, legs or leglike appendages. Amphibians, lizards, crocodiles, dinosaurs, birds, and mammals are all tetrapods, and even the limbless snakes are tetrapods by descent. The earliest tetrapods radiated from the Sarcopterygii, or "lobe-finned" fishes, into air-breathing "amphibians" in the Devonian period.
In coastal engineering a tetrapod is a four-legged concrete structure used as armour unit on breakwaters. The unit was originally developed by http://www.sogreah.fr Sogreah in France. They are no longer protected by a patent, and are widely used all over the world, produced by many contractors.