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Filum Chordata adalah kelompok hewan, termasuk vertebrata dan beberapa binatang yang mirip invertebrata yang memiliki ciri-ciri yang serupa. Semua anggota kelompok ini, pada suatu saat dalam kehidupan mereka, memiliki notokorda , tali saraf dorsal berongga, celah faring ( pharyngeal slits ), [1] endostyle , dan ekor berotot yang melewati anus .
- Chordata, William Bateson, 1885
- Eukaryota
Order Arthrodira. Order Antiarchi. Order Brindabellaspida. Order Petalichthyida. Order Phyllolepida. Order Ptyctodontida. Order Rhenanida. Order Pseudopetalichthyida (The placement of this order is debated.) Order Stensioellida (The placement of this monotypic order is debated.)
- History of Name
- Anatomy
- Classification
- Subphyla
- Phylogeny
- Closest Nonchordate relatives
- See Also
- External Links
Although the name Chordata is attributed to William Bateson (1885), it was already in prevalent use by 1880. Ernst Haeckel described a taxon comprising tunicates, cephalochordates, and vertebrates in 1866. Though he used the German vernacular form, it is allowed under the ICZN codebecause of its subsequent latinization.
Chordates form a phylumof animals that are defined by having at some stage in their lives all of the following anatomical features: 1. A notochord, a stiff but elastic rod of glycoprotein wrapped in two collagen helices, which extends along the central axis of the body. Among members of the subphylum Vertebrata (vertebrates), the notochord gets rep...
The following schema is from the 2015 edition of Vertebrate Palaeontology. The invertebrate chordate classes are from Fishes of the World. While it is structured so as to reflect evolutionary relationships (similar to a cladogram), it also retains the traditional ranks used in Linnaean taxonomy. 1. Phylum Chordata 1.1. Subphylum Cephalochordata (Ac...
Cephalochordata: Lancelets
Cephalochordates, one of the three subdivisions of chordates, are small, "vaguely fish-shaped" animals that lack brains, clearly defined heads and specialized sense organs.These burrowing filter-feeders compose the earliest-branching chordate subphylum.
Tunicata
Most tunicates appear as adults in one of two major forms, known as "sea squirts" and salps. Both of these are soft-bodied filter-feeders that lack the standard features of chordates, which are only retained in their larvae. Sea squirts are sessile and consist mainly of water pumps and filter-feeding apparatus; salps float in mid-water, feeding on plankton, and have a two-generation cycle in which one generation is solitary and the next forms chain-like colonies. However, all tunicate larvae...
Craniata
Craniates all have distinct skulls. They include the hagfish, which have no vertebrae. Michael J. Benton commented that "craniates are characterized by their heads, just as chordates, or possibly all deuterostomes, are by their tails". Most craniates are vertebrates, in which the notochord is replaced by the vertebral column. It consists of a series of bony or cartilaginous cylindrical vertebrae, generally with neural arches that protect the spinal cord, and with projections that link the ver...
Overview
There is still much ongoing differential (DNA sequence based) comparison research that is trying to separate out the simplest forms of chordates. As some lineages of the 90% of species that lack a backbone or notochord might have lost these structures over time, this complicates the classification of chordates. Some chordate lineages may only be found by DNA analysis, when there is no physical trace of any chordate-like structures. Attempts to work out the evolutionary relationships of the ch...
Cladogram
Below is a phylogenetic tree of the phylum. Lines of the cladogram show probable evolutionary relationships between both extinct taxa, which are denoted with a dagger (†), and extant taxa. Relatives of vertebrates are invertebrates. The positions (relationships) of the lancelets, tunicates, and craniates/vertebrates are based on the following studies:
The closest relatives of the Chordates are believed to be the Hemichordates and Echinodermata, which together form the Ambulacraria.The Chordata and Ambulacraria together form the superphylum Deuterostomia.
"Chordate" at the Encyclopedia of LifeFilum Chordata adalah kelompok hewan, termasuk vertebrata dan beberapa binatang yang mirip invertebrata yang memiliki ciri-ciri yang serupa. Semua anggota kelompok ini, pada suatu saat dalam kehidupan mereka, memiliki notokorda, tali saraf dorsal berongga, celah faring (pharyngeal slits), endostyle, dan ekor berotot yang melewati anus.
Jul 12, 2023 · Berikut dibawah ini, ada beberapa ciri-ciri dari Chordata, diantaranya yaitu: Memiliki notochord, yaitu suatu tangkai pendukung atau semacam tulang rawan yang memanjang di bagian dorsal tepatnya dibawah susunan saraf. Tali saraf dorsal (nervecord), yaitu tabung yang berasal dari serat saraf yang berkembang jadi sistem saraf pusat, yang terdiri ...
Terdapat 26 subkategori seluruhnya dalam kategori ini. Semua kelas actinopterygii (1 H) Semua kelas amphibia (38 H) Semua kelas aves (745 H) Semua kelas mammalia (428 H) Semua kelas sauropsida (234 H)
Jan 10, 2024 · Pengertian Chordata. Chordata merupakan suatu filum dalam kingdom Animalia yang mencakup kelompok hewan yang memiliki ciri khas tertentu. Ciri utama dari hewan-hewan dalam filum Chordata adalah adanya notochord, yang merupakan struktur fleksibel seperti batang yang berada di bagian punggung hewan tersebut pada tahap perkembangan tertentu.
