tetrapod
Noun: 1. A vertebrate animal having four feet, legs, or leg-like appendages: A member of the superclass Tetrapoda, which includes all vertebrates with four limbs or whose ancestors had four limbs. This group encompasses amphibians, reptiles, birds, and mammals.
The word "tetrapod" is a scientific term used primarily in biology, zoology, and paleontology to classify a major group of vertebrate animals based on the fundamental characteristic of having four limbs.
- Noun:
- Humans, frogs, eagles, and crocodiles are all examples of a tetrapod.
- The evolution of the tetrapod from fish was a key event in the history of life on land.
- Scientists study fossilized tetrapod footprints to understand how early animals moved.
- Evolutionary Context: The term is often used to discuss the transition from aquatic to terrestrial life. For example, "The tetrapod limb evolved from the paired fins of lobe-finned fish."
- Morphological Description: It can describe structure, even in animals that have lost limbs through evolution. For example, "Snakes and whales are still classified as tetrapods because they evolved from four-limbed ancestors."
- Tetrapoda (n): The scientific superclass name for the group.
- Tetrapodous (adj): Having four feet or legs. (Technical/rare)
- Tetrapody (n): The condition of having four feet. (Technical)
- Four-limbed vertebrate
- Quadruped (Note: This is a near-synonym but specifically refers to animals that on four legs, whereas "tetrapod" includes bipeds and animals with modified limbs like wings or flippers.)
The word "tetrapod" has a highly specific meaning in biology and does not have common alternative meanings in general English. In engineering, a tetrapod is a four-legged concrete structure used in coastal defense, named for its resemblance to the animal form.
-
a vertebrate animal having four feet or legs or leglike appendages
Khám phá thêm
Các từ liên quan
Từ có nhắc đến "tetrapod"
