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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. Ascidians are found all over the world, usually in shallow water with salinities over ...
1 Characteristics. 2 Taxonomy. 3 References. ... Phlebobranchia is an order of sea squirts in the class Ascidiacea, [1] first described by Fernando Lahille in 1886. [2]
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
Herdmania momus found in Makadi Bay, Hurghada, Red Sea, Egypt Herdmania momus found in Makadi Bay, Hurghada, Red Sea, Egypt. The solitary ascidian Herdmania momus is one of the most commonly encountered species of ascidians.
Ecteinascidia turbinata is a colonial sea squirt. The individual zooids can grow to a height of 2.5 cm (1 in) and are shaped like wide-necked bottles. They are connected by a stolon at the base through which blood circulates between the zooids and which serves to attach the colony to the substrate.
An aerial view of utility vehicles parked near beachfront homes destroyed in the Palisades Fire as wildfires cause damage and loss through the L.A. region on Jan. 13, 2025 in Malibu, California.
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.
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.