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Há 6 dias · Background. 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.
- Introduction
Dehal P et al. (+ 86 additional authors) (2002) The draft...
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Between brackets is the number of accepted marine extant...
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Website and databases developed and hosted by VLIZ · Page...
- Literature
2,309 sources found, showing records 1-100. Click on one of...
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Number of records in Ascidiacea. all names: number of marine...
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In a major stride towards understanding the mysteries of our...
- Introduction
6 de mai. de 2024 · The vertebrates are the only chordate group with neural cephalization, and their neural functions are centralized towards a series of vesicular enlargements in the head, which give rise to a brain.
- Animalia
- Vertebrata, J-B. Lamarck, 1801
6 de mai. de 2024 · 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 · Drosophila melanogaster is a species of fly (an insect of the order Diptera) in the family Drosophilidae. The species is often referred to as the fruit fly or lesser fruit fly, or less commonly the " vinegar fly", " pomace fly", [a] [5] or " banana fly". [6]
Há 5 dias · In addition, recent developmental genes expression data suggest that the chordate and deuterostomes ancestor was a worm-like solitary organism, similarly to enteropneust hemichordates (Brown et al. 2008). Citation Usage of data from the Hemichordata World Database in scientific publications should be acknowledged by citing as follows:
18 de abr. de 2024 · 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.
Há 20 horas · Marine invertebrates are animals that inhabit a marine environment apart from the vertebrate members of the chordate phylum; invertebrates lack a vertebral column. Some have evolved a shell or a hard exoskeleton. The earliest animal fossils may belong to the genus Dickinsonia, 571 million to 541 million years ago.
