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  • Ascidiacea - Wikipedia
    Ascidiacea, commonly known as the ascidians or sea squirts, is a paraphyletic class in the subphylum Tunicata of sac-like marine invertebrate filter feeders [2] Ascidians are characterized by a tough outer test or "tunic" made of the polysaccharide cellulose
  • Global Diversity of Ascidiacea - PMC
    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 [1] – [3]
  • Ascidiacea World Database - WoRMS - World Register of Marine Species
    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
  • Tunicate | Anatomy, Habitat Adaptations | Britannica
    The tunicates are divided into three classes: Ascidiacea (ascidians, or sea squirts), Appendicularia , and Thaliacea Ascidians are largely benthic animals They often form colonies, comprising a few to many individuals (zooids), which reach up to two metres in length Solitary (noncolonial) forms range from one millimetre to over 20
  • Ascidians - Urochordata - The Australian Museum
    Ascidians belong to the subphylum Urochordata - one of the major groups of the phylum Chordata, which includes the vertebrates (fishes, amphibians, reptiles, birds and mammals) Sydney has over 80 species of ascidians
  • Ascidiacea - an overview | ScienceDirect Topics
    Ascidians, or sea squirts, are tunicates that diverged from the vertebrate lineage early in the chordate evolution The compact and simple organization of the ascidian genome makes this organism an ideal model system for analyzing gene regulatory networks in embryonic development
  • An Introduction to Ascidians - SpringerLink
    Ascidians are exclusively marine prochordates belonging to the Class Ascidiace of the subphylum Urochordata There are both solitary and colonial forms with a sessile adult attached directly to hard substrates or fixed in sediments and a tailed, free-swimming larva
  • Phylogenomic and morphological relationships among the . . . - Nature
    Ascidians (Phylum Chordata, Class Ascidiacea) are a large group of invertebrates which occupy a central role in the ecology of marine benthic communities Many ascidian species have become
  • Star ascidian - The Wildlife Trusts
    Star ascidian have a dark, flat, gelatinous structure (tunic) with petal star patterning covering the tunic They often vary in colour from clear to yellow to light brown stars Found all around Britain and Ireland Did you know?
  • Sea squirt | Tunicate, Filter Feeding Reproduction | Britannica
    sea squirt, any member of the invertebrate class Ascidiacea (subphylum Urochordata, also called Tunicata), marine animals with some primitive vertebrate features Sea squirts are primarily sessile (permanently fixed to a surface), potato-shaped organisms found in all seas, from the intertidal zone to the greatest depths





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