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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 .
Diagrammatic section of an Ascidia, representing the three sacs and the branchial sac as the pharynx or throat: (a) branchial orifice; (b) atrial orifice; (c) tunic or test (d) mantle; (e) branchial sac; (f) gullet; (g) stomach; (h) anal orifice; (i) dorsal lamina; the dotted line indicates the endostyle.
Pages in category "Ascidiacea" The following 6 pages are in this category, out of 6 total. This list may not reflect recent changes. ...
Clavelina ("little bottle") is genus of sea squirts (the Ascidiacea), containing the following species: [2] Clavelina amplexa Kott, 2002 Clavelina arafurensis Tokioka, 1952
Pycnoclavela diminuta lives in colonies composed of small clusters of zooids that originate from a common stalk. Each zooid is approximately 0.5–1 cm (0.20–0.39 in) in length.
Clavelina ossipandae, the skeleton panda sea squirt or skeleton panda ascidian (Japanese: ガイコツパンダホヤ, romanized: gaikotsu-panda-hoya), is a species of colonial ascidian (), a group of sessile, marine filter-feeding invertebrates.
Ascidiidae ("same-sac family") is a family of tunicates in the class Ascidiacea. [1] [2] Some species contain elevated amounts of vanadium. There are 4 genera: Ascidia; Ascidiella; Fimbrora; Phallusia; Psammascidia
Phlebobranchia is an order of sea squirts in the class Ascidiacea, [1] first described by Fernando Lahille in 1886. [2] Characteristics.