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Bolosoma stalked glass sponge. Hexactinellid sponges are sponges with a skeleton made of four- and/or six-pointed siliceous spicules, often referred to as glass sponges.They are usually classified along with other sponges in the phylum Porifera, but some researchers consider them sufficiently distinct to deserve their own phylum, Symplasma.
Claviscopulia is one of the genus in the family Farreidae under a class of glass sponges or Hexactinellida. Hexactinellida is one of four classes of phylum Porifera. [4] Hexactinellida can exist in many different forms and shapes: sac, vase, blade, and branching. Hexactinellida is distinguished from the other three classes of sponge for its ...
Hexasterophora are a subclass of glass sponges in the class Hexactinellida. Most living hexasterophorans can be divided into three orders: Lyssacinosida, Lychniscosida, and Sceptrulophora. [ 4] Like other glass sponges, hexasterophorans have skeletons composed of overlapping six-rayed spicules. In addition, they can be characterized by the ...
Sponge reefs are reefs produced by sea sponges. All modern sponge reefs are formed by hexactinellid sponges, which have an endoskeleton made of silica spicules and are often referred to as "glass sponges", while historically the non-spiculed, calcite -skeletoned archaeocyathid and stromatoporoid sponges were the primary reef-builders.
Euplectella is a member of the class Sclerospongiae or glass sponges. [8] These sponges are anchored to the seafloor by thousands of spicules. Spicules are long glassy fibers that are covered with recurved barbs. Spicules provide high beam strength support for anchoring and strengthening the structure of this animal. [9]
Amphidiscosida (sometimes spelled Amphidiscosa) [2][3] is an order of hexactinellids (glass sponges). The Amphidiscosida are commonly regarded as the only living sponges in the subclass Amphidiscophora. [4][5] As the name implies, the Amphidiscosida are characterized by a special type of microsclere (microscopic spicules): amphidiscs.
Reid, 1958. Reticulosa is an extinct order of sea sponges in the class Hexactinellida (glass sponges) and the subclass Amphidiscophora. [1][2] Reticulosans were diverse in shape and size, similar to their modern relatives, the amphidiscosidans. Some were smooth and attached to a surface at a flat point, others were polyhedral or ornamented with ...
Glass sponges (Hexactinellids) have different body plans than other members of the Metazoan because the adult tissue is made up of a single giant multinucleated syncytium. This multinucleated syncytium creates the inner and outer layers of the sponge and is connected to uninucleate cellular regions by cytoplasmic bridges. [ 7 ]
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