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A chordate (/ ˈ k ɔːr d eɪ t / KOR-dayt) is a deuterostomic animal belonging to the phylum Chordata (/ k ɔːr ˈ d eɪ t ə / 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.
This article contains a list of all of the classes and orders that are located in the Phylum Chordata . Subphylum Cephalochordata. Class Leptocardii: Lancelets. Lancelet Branchiostoma lanceolatum. Order Amphioxiformes. Family Pikaiidae †. Genus Pikaia †. Olfactores (unranked) Subphylum Tunicata. Class Ascidiacea: Ascideans and sessile tunicates.
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)
- Chordata, Bateson, 1885
15 de fev. de 2024 · Chordate is a phylum of animals that includes vertebrates, tunicates, and cephalochordates. Learn about their general features, life cycle, ecology, and evolution from Britannica.
The chordates are named for the notochord, which is a flexible, rod-shaped mesodermal structure that is found in the embryonic stage of all chordates and in the adult stage of some chordate species. It is strengthened with glycoproteins similar to cartilage and covered with a collagenous sheath.
Cephalochordata. clade Olfactores : Urochordata. Vertebrata. † Vetulicolia 1. Les chordés ou cordés ( Chordata) forment un embranchement d' animaux du clade des bilatériens et appartenant au super-embranchement des deutérostomiens.