Tetrapod - Wikipedia
网页Tetrapod. A tetrapod (/ ˈtɛtrəˌpɒd /; [5] from Ancient Greek τετρα- (tetra-) 'four' and πούς (poús) 'foot') is any four- limbed vertebrate animal of the superclass Tetrapoda (/ tɛˈtræpədə /). [6] Tetrapods include all extant and extinct amphibians and amniotes, with the latter in turn evolving into two major clades, the ...
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 (amphibians), Reptilia (reptiles), Aves (birds), Mammalia (mammals), and their direct ancestors that emerged roughly 397 million years ago during the.
四足類 - 维基百科，自由的百科全书
网页四足類（英語： tetrapod ）是一支主要为适应 陆地环境而演化的有颌类 脊椎动物，在生物分类学上组成了四足总纲或四足超纲（學名： Tetrapoda ），包含两栖动物和羊膜动物两类，前者包括仅存的滑体类和已灭绝的离片椎类与壳椎类，后者包括合弓纲（现生的 ...
Tetrapodomorpha - Wikipedia
网页Among the characteristics defining tetrapodomorphs are modifications to the fins, notably a humerus with convex head articulating with the glenoid fossa (the socket of the shoulder joint). Another key trait is the internal nostril or choana. Most fish have two pairs of nostrils, one on either side of the head for incoming water (incurrent ...
Tetrapod - Examples, Characteristics, Evolution, & Pictures
网页2024年7月31日 · Tetrapods are vertebrates with four limbs. They belong to the superclass Tetrapoda, with over 30,000 species, including all extant and extinct anamniotes (amphibians) and anamniotes (reptiles and mammals). Their name is obtained from the Ancient Greek words ‘tetra,’ meaning ‘four,’ and ‘pous,’ meaning ‘foot,’ referring to their ...
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 | Encyclopedia MDPI
网页2022年11月4日 · Tetrapods (/ˈtɛtrəˌpɒdz/; from grc τετρα- (tetra-) 'four', and πούς (poús) 'foot') are four-limbed vertebrate animals constituting the superclass Tetrapoda (/tɛˈtrɒpədə/). It includes extant and extinct amphibians, reptiles (including dinosaurs and therefore birds), and synapsids (including mammals). Tetrapods evolved from a ...
Vertebrate - Tetrapods, Anatomy, Adaptations | Britannica
网页2024年9月11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.
Tetrápodos - Wikipedia, a enciclopedia libre
网页Os tetrápodos (Tetrapoda) (do grego τετραπόδηs tetrӑpódēs, latinizado tetrapoda, "de catro pés, ou de catro patas") son unha superclase de animais vertebrados con catro extremidades empregadas no desprazamento ou a manipulación. Dado que os anfibios, réptiles, mamíferos e aves son tetrápodos (incluíndo as píntegas ápodas e serpentes, por cuestións taxonómicas), o termo ...
Stem tetrapoda - Wikipedia
网页The Stem Tetrapoda are a cladistically defined group, consisting of all animals more closely related to extant four-legged vertebrates than to their closest extant relatives (the lungfish), but excluding the crown group Tetrapoda.