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Les chordés ou cordés ( Chordata) forment un embranchement d' animaux du clade des bilatériens et appartenant au super-embranchement des deutérostomiens. Leur nom provient de la notochorde, une lamelle cartilagineuse située sur le côté dorsal de l'animal, forme la plus élémentaire d'un endosquelette (squelette interne).
A chordate ( / ˈkɔːrdeɪt / KOR-dayt) is a deuterostomic animal belonging to the phylum Chordata ( / kɔːrˈdeɪtə / kor-DAY-tə ). All chordates possess, at some point during their larval or adult stages, five distinctive physical characteristics ( synapomorphies) that distinguish them from other taxa.
Cette page a pour objet de présenter un arbre phylogénétique des Chordata (Chordés ou Cordés), c'est-à-dire un cladogramme mettant en lumière les relations de parenté existant entre leurs différents groupes (ou taxa), telles que les dernières analyses reconnues les proposent.
Chordate is a phylum of animals that includes vertebrates, tunicates, and cephalochordates. Learn about their general features, life cycle, ecology, and evolution from Britannica.
Chordates, phylum Chordata, are a phylum of animals which have a notochord. The group includes vertebrates, with some closely related invertebrates . Classification. Taxonomy. Phylum Chordata. Tunicata – (tunicates, formerly Urochordata; 3,000 species) † Vetulicolia (8 Cambrian species of fossil) Cephalochordata – (lancelets, 30 species)
List of chordate orders. Spotted gar, Lepisosteus oculatus. This article contains a list of all of the classes and orders that are located in the Phylum Chordata .
Figure 29.3 Chordate features. In chordates, four common features appear at some point during development: a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail. The endostyle is embedded in the floor of the pharynx.
