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Sponges were traditionally distributed in three classes: calcareous sponges (Calcarea), glass sponges (Hexactinellida) and demosponges (Demospongiae). However, studies have now shown that the Homoscleromorpha, a group thought to belong to the Demospongiae, has a genetic relationship well separated from other sponge classes.
Category: Sponges by classification. 3 languages. ... This category lists animals of the phylum Porifera, sorted by taxonomic classes. Subcategories.
Homoscleromorpha is phylogenetically well separated from Demospongiae. [4] Therefore, it has been recognized as the fourth class of sponges. [5] [6]It has been suggested that Homoscleromorpha are more closely related to eumetazoans than to the other sponge groups, rendering sponges paraphyletic. [7]
The carnivorous ping-pong tree sponge, Chondrocladia lampadiglobus [3] [4] Monanchora arbuscula (Poecilosclerida) Geodia barretti (Tetractinellida) Chondrosia reniformis (Chondrosiida) Spongia officinalis (Dictyoceratida) Spongilla lacustris (Spongillida) Demosponges (Demospongiae) are the most diverse class in the phylum Porifera.
The following are lists of sponges: List of prehistoric sponge genera; ... Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; ...
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 siliceous skeletal arrangements (spicules), triaxonic symmetry (six-rayed spicules or hexactins), and its huge ...
All three sponge body plans (asconoid, syconoid, and leuconoid) can be found within the class Calcarea. Typically, calcareous sponges are small, measuring less than 10 cm (3.9 in) in height, and drab in colour. However, a few brightly coloured species are also known. Like the Homoscleromorpha, calcareous sponges are exclusively viviparous. [7]
Prehistoric sponges (6 C, 4 P) T. Sponge taxa by rank (5 C) ... Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...