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Há 3 dias · Ascidians (Phylum: Chordata, Class: Ascidiacea), or sea squirts, are the largest and most diverse class of the sub-phylum Tunicata (also known as Urochordata). They comprise approximately 3000 described species found in all marine habitats from shallow water to the deep sea.
Há 6 dias · vertebrate, any animal of the subphylum Vertebrata, the predominant subphylum of the phylum Chordata. They have backbones, from which they derive their name. The vertebrates are also characterized by a muscular system consisting primarily of bilaterally paired masses and a central nervous system partly enclosed within the backbone.
Há 5 dias · Fish, any of approximately 34,000 species of vertebrate animals (phylum Chordata) found in the fresh and salt waters of the world. Living species range from the primitive jawless lampreys and hagfishes through the cartilaginous sharks, skates, and rays to the abundant and diverse bony fishes.
Há 6 dias · The vertebrates consist of all the taxa within the subphylum Vertebrata (/ ˌ v ɜːr t ə ˈ b r eɪ t ə /) (chordates with backbones) and represent the overwhelming majority of the phylum Chordata, with currently about 69,963 species described.
18 de abr. de 2024 · Share. Abstract. Metameric somites are a novel character of chordates with unclear evolutionary origins. In the early branching chordate amphioxus, anterior somites are derived from the paraxial mesodermal cells that bud off the archenteron (i.e., enterocoely) at the end of gastrulation.
26 de abr. de 2024 · We found that chordates need 15 more synonymous codon categories than arthropods to explain the empirical codon frequencies, which suggests that the extent of codon usage can vary greatly between animal phyla.
22 de abr. de 2024 · The classification of phylum chordata have been proposed by a number of taxonomists from time to time due to the great diversity of chordate. These organisms have rigid, dorsal supporting rods at some point during their life cycle. Some examples of phylum Chordata include pandas, crows, sharks, owls and humans.
