• Thumbnail for Chordate
    A chordate (/ˈkɔːrdeɪt/ KOR-dayt) is a deuterostomic animal belonging to the phylum Chordata (/kɔːrˈdeɪtə/ kor-DAY-tə). All chordates possess, at some...
    50 KB (4,717 words) - 21:58, 25 March 2024
  • The Cambrian chordates are an extinct group of animals belonging to the phylum Chordata that lived during the Cambrian, between 538 and 485 million years...
    24 KB (2,720 words) - 21:27, 10 March 2024
  • Thumbnail for Deuterostome
    cord of chordates. Except for the echinoderms, both the hemichordates and the chordates have a thickening of the aorta, homologous to the chordate heart...
    33 KB (3,162 words) - 03:36, 27 March 2024
  • Thumbnail for Tunicate
    urochordates is still sometimes used for these animals. They are the only chordates that have lost their myomeric segmentation, with the possible exception...
    62 KB (7,230 words) - 09:24, 3 February 2024
  • Thumbnail for Invertebrate
    notochord. It is a paraphyletic grouping including all animals excluding the chordate subphylum Vertebrata, i.e. vertebrates. Well-known phyla of invertebrates...
    41 KB (4,736 words) - 00:15, 25 March 2024
  • Chordate genomics is the study of the evolution of the chordate clade based on a comparison of the genomes of several species within the clade. The field...
    3 KB (464 words) - 14:57, 14 February 2018
  • Thumbnail for Shark anatomy
    anatomy is a potential result of speciation and habitat variation. The five chordate synapomorphies are present in chondrichthyes as follows. The five synapomorphies...
    33 KB (4,260 words) - 21:46, 12 February 2024
  • Thumbnail for Vertebrate
    consist of all the taxa within the subphylum Vertebrata (/ˌvɜːrtəˈbreɪtə/) (chordates with backbones) and represent the overwhelming majority of the phylum...
    77 KB (7,019 words) - 14:26, 24 March 2024
  • Thumbnail for List of chordate orders
    This article contains a list of all of the classes and orders that are located in the Phylum Chordata. Order Amphioxiformes Genus Pikaia † Order Enterogona...
    14 KB (945 words) - 20:28, 8 April 2023
  • Thumbnail for Lamprey
    their development are considered to be chordates. Lampreys contain these characteristics that define them as chordates. Lamprey anatomy is very different...
    82 KB (8,663 words) - 22:23, 23 March 2024
  • Thumbnail for Pikaia
    Pikaia (category Prehistoric chordate genera)
    Morris as a chordate, it became "the most famous early chordate fossil", or "famously known as the earliest described Cambrian chordate". It is estimated...
    48 KB (5,647 words) - 21:18, 10 March 2024
  • Thumbnail for Lancelet
    feeding chordates in the subphylum Cephalochordata, class Leptocardii, and family Branchiostomatidae. Lancelets diverged from other chordates during or...
    62 KB (6,294 words) - 04:27, 25 March 2024
  • Thumbnail for Worm
    crustaceans, arachnids, insects, worms, radiates, polyps, and infusorians. Chordates are remarkably wormlike by ancestry. In the 13th century, worms were recognized...
    10 KB (1,001 words) - 08:54, 18 March 2024
  • current vogue. "Cambrian Primitive Chordate Fossil". www.fossilmuseum.net. Retrieved 29 May 2018. "Duffy: Chordate Origins". www.biology.ualberta.ca....
    2 KB (175 words) - 21:51, 10 March 2024
  • Thumbnail for Haikouichthys
    Haikouichthys (category Cambrian chordates)
    fishes. Cladistic analysis indicates that the animal is probably a basal chordate or a basal craniate; but it does not possess sufficient features to be...
    6 KB (559 words) - 21:37, 10 March 2024
  • Thumbnail for Cathaymyrus
    Cathaymyrus (category Cambrian chordates)
    Cathaymyrus is a genus of Early Cambrian chordate known from the Chengjiang biota in Yunnan Province, China. Both species have a long segmented body with...
    3 KB (241 words) - 16:41, 14 March 2024
  • Thumbnail for Notochord
    Notochord (category Chordates)
    notochord is one of five synapomorphies used to define a species as a chordate. The notochord is derived from the embryonic mesoderm and consists of an...
    20 KB (2,255 words) - 18:19, 22 February 2024
  • Thumbnail for Craniate
    Craniate (category Chordates)
    member of the Craniata (sometimes called the Craniota), a proposed clade of chordate animals with a skull of hard bone or cartilage. Living representatives...
    17 KB (1,576 words) - 00:33, 19 March 2024
  • conserfariam) Socorro isopod (Thermosphaeroma thermophilum) There are 21 chordate species assessed as extinct in the wild. Wyoming toad (Anaxyrus baxteri)...
    4 KB (291 words) - 21:10, 21 January 2024
  • Thumbnail for Hemichordate
    phylogenetic relatives of chordates. Thus these marine worms are of great interest for the study of the origins of chordate development. There are several...
    25 KB (2,656 words) - 21:35, 10 March 2024
  • Thumbnail for Metaspriggina
    Metaspriggina (category Cambrian chordates)
    Metaspriggina is a genus of chordate initially known from two specimens in the Middle Cambrian Burgess Shale and 44 specimens found in 2012 at the Marble...
    10 KB (956 words) - 02:07, 8 September 2023
  • Thumbnail for Yunnanozoon
    Yunnanozoon (category Cambrian chordates)
    with various studies suggesting placements as a cephalochordate, a stem-chordate, a hemichordate, a stem-vertebrate, a stem-deuterostome, an ambulacrarian...
    7 KB (712 words) - 17:15, 13 February 2024
  • Thumbnail for Metamorphosis
    in hemimetabolous insects. In chordates, metamorphosis is iodothyronine-induced and an ancestral feature of all chordates. All three categories of metamorphosis...
    23 KB (2,666 words) - 22:04, 7 March 2024
  • Thumbnail for The Ancestor's Tale
    mya Lancelets (Amphioxiformes) Lancelets are a text book example of a chordate. Equipped with a notochord, a nerve tube on the dorsal side and gill slits...
    54 KB (973 words) - 08:26, 6 March 2024
  • The largest animal currently alive is the blue whale. The maximum recorded weight was 190 tonnes for a specimen measuring 27.6 metres (91 ft), whereas...
    154 KB (15,524 words) - 17:51, 26 March 2024
  • Thumbnail for Pharyngeal slit
    of invertebrate chordates.[citation needed] Pharyngeal arches, pouches, and clefts are, at some stage of life, found in all chordates. One theory of their...
    9 KB (1,063 words) - 15:35, 7 November 2023
  • Thumbnail for Sea urchin
    indicating that the sea urchin belongs to the Bilateria, along with chordates, arthropods, annelids and molluscs. Sea urchins are found in every ocean...
    74 KB (7,726 words) - 15:59, 16 March 2024
  • Thumbnail for Infundibulum (heart)
    pouch formed from the upper and left angle of the right ventricle in the chordate heart, from which the pulmonary trunk arises. It develops from the bulbus...
    1 KB (147 words) - 04:04, 22 March 2024
  • Thumbnail for Mollusca
    animal species — far behind the arthropods' 1,113,000 but well ahead of chordates' 52,000.: Front endpaper  About 200,000 living species in total are estimated...
    92 KB (9,416 words) - 22:34, 25 March 2024
  • Thumbnail for Olfactores
    Olfactores (category Chordates)
    majority of the phylum Chordata, as the Cephalochordata are the only chordates not included in the clade. This clade is defined by a more advanced olfactory...
    5 KB (440 words) - 15:45, 25 October 2023