Tetrapod - Wikipedia
网页Tetrapods include all extant and extinct amphibians and amniotes, with the latter in turn evolving into two major clades, the sauropsids (reptiles, including dinosaurs and therefore birds) and synapsids (extinct pelycosaurs, therapsids and all …
The origin of tetrapods - Understanding Evolution
网页This ancient vertebrate lineage had fins (with lepidotrichia), scales, gills, and lived in the water. Yet they also had air bladders (air-filled sacs) connected to the back of their throats that could be used for breathing air (i.e., as lungs) or for buoyancy control.
Tetrapod | Vertebrates, Amphibians, Reptiles | Britannica
网页2024年8月7日 · tetrapod, (superclass Tetrapoda), a superclass of animals that includes all limbed vertebrates (backboned animals) constituting the classes Amphibia , Reptilia , Aves , Mammalia , and their direct ancestors that emerged roughly 397 million years ago during the Devonian Period.
What Makes Tetrapods Different From Other Animals? - ThoughtCo
网页2019年7月29日 · Tetrapods are a group of vertebrates that includes amphibians, reptiles, birds, and mammals. Tetrapods include all living land vertebrates as well as some former land vertebrates that have since adopted an aquatic lifestyle (such as whales, dolphins, seals, sea lions, sea turtles, and sea snakes). One of the key characteristics of tetrapods …
Tetrapod - Simple English Wikipedia, the free encyclopedia
网页Batrachomorpha (Amphibia, temnospondyli, and lepospondyli) Reptiliomorpha. Tetrapods (Greek tetrapoda = four feet) are vertebrate four-legged land animals. This kind of locomotion is called quadrupedal. Amphibians, reptiles, dinosaurs (including their direct descendants, the birds), and mammals are all tetrapods.
Introduction to the Tetrapoda - University of California Museum of ...
网页Amphibians, reptiles (including dinosaurs and birds) and mammals are the major groups of the Tetrapoda. Tetrapods include all land-living vertebrates, such as frogs, turtles, hawks, and lions.
The Evolution of the First Tetrapods - ThoughtCo
网页2019年2月24日 · About 400 million years ago, a fish with primitive lungs and stumpy limbs climbed out of the water and onto dry land. Learn about the first tetrapods.
Vertebrate - Tetrapods, Anatomy, Adaptations | Britannica
网页2024年9月26日 · Vertebrate - Tetrapods, Anatomy, Adaptations: Tetrapods live primarily on land and are similar in habit. Members include amphibians, reptiles, birds, and mammals. Features include the notochord, dorsal nerve tube, and pharyngeal slits. Support and protection are provided by the exoskeleton, when present, and the endoskeleton.
The Rise of the Tetrapods: How Our Early Ancestors Left Water …
网页2021年4月5日 · The story of how the first vertebrates came to walk on land hundreds of millions of years ago and filled the Earth with its many descendants. By Joshua Rapp Learn. Apr 5, 2021 8:14 PM.
Early tetrapods had an eye on the land - Nature
网页2019年10月23日 · But the ancient bones of a newly discovered species of tetrapod now provide some crucial missing evidence. Fossils shed light on how aquatic vertebrates evolved into land dwellers.