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  2. List of chordate orders - Wikipedia

    en.wikipedia.org/wiki/List_of_chordate_orders

    This article contains a list of all of the classes and orders that are located in the phylum Chordata. The subphyla Tunicata and Vertebrata are in the unranked Olfactores clade, while the subphylum Cephalochordata is not. Animals in Olfactores are characterized as having a more advanced olfactory system than animals not in it.

  3. Chordate - Wikipedia

    en.wikipedia.org/wiki/Chordate

    A chordate (/ ˈ k ɔːr d eɪ t / KOR-dayt) is a deuterostomal bilaterian 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.

  4. List of animal classes - Wikipedia

    en.wikipedia.org/wiki/List_of_animal_classes

    The following is a list of the classes in each phylum of the kingdom Animalia. There are 107 classes of animals in 33 phyla in this list. However, different sources give different numbers of classes and phyla. For example, Protura, Diplura, and Collembola are often considered to be the three orders in the class Entognatha. This list should by ...

  5. Mammal classification - Wikipedia

    en.wikipedia.org/wiki/Mammal_classification

    Mammalia is a class of animal within the phylum Chordata. Mammal classification has been through several iterations since Carl Linnaeus initially defined the class. No classification system is universally accepted; McKenna & Bell (1997) and Wilson & Reader (2005) provide useful recent compendiums. [1]

  6. Category:Chordates - Wikipedia

    en.wikipedia.org/wiki/Category:Chordates

    This category consists all articles on taxa at the subphyla and class levels in the Chordata phylum. Subcategories. This category has the following 11 subcategories ...

  7. Taxonomy of the vertebrates (Young, 1962) - Wikipedia

    en.wikipedia.org/wiki/Taxonomy_of_the...

    Phylum Chordata [p. 24] . Subphylum 1. Hemichordata (e.g., Balanoglossus, Cephalodiscus, Rhabdopleura); Subphylum 2. Cephalochordata (= Acrania) (e.g., Branchiostoma ...

  8. Deuterostome - Wikipedia

    en.wikipedia.org/wiki/Deuterostome

    Another feature present in both the Hemichordata and Chordata is pharyngotremy — the presence of spiracles or gill slits into the pharynx, which is also found in some primitive fossil echinoderms . [17] [18] A hollow nerve cord is found in all chordates, including tunicates (in the larval stage). Some hemichordates also have a tubular nerve cord.

  9. Tunicate - Wikipedia

    en.wikipedia.org/wiki/Tunicate

    Botryllus schlosseri (class Ascidiacea) is a colonial tunicate, a member of the only group of chordates that are able to reproduce both sexually and asexually. B. schlosseri is a sequential (protogynous) hermaphrodite, and in a colony, eggs are ovulated about two days before the peak of sperm emission. [60]