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While also known as the "boring sponge", Cliona celata is the only species of sponge without microscleres. [citation needed] Cliona celata is a distinctive sponge known for its unique morphology and characteristics. In its 'raphyrus' or massive stage, it forms large lobose structures with rounded ridges, reaching sizes of up to 40 cm across and ...
Demosponges (Demospongiae) are the most diverse class in the phylum Porifera. They include greater than 90% of all species of sponges with nearly 8,800 species worldwide (World Porifera Database). [5] They are sponges with a soft body that covers a hard, often massive skeleton made of calcium carbonate, either aragonite or calcite [citation ...
Callyspongia (Cladochalina) aculeata, commonly known as the branching vase sponge is a species of sea sponge in the family Callyspongiidae. [1] Poriferans are typically characterized by ostia, pores that filter out plankton, with an osculum as the opening which water leaves through, and choanocytes trap food particles.
Sponges, known scientifically as Porifera, are the oldest metazoans and are used to elucidate the basics of multicellular evolution. [2] These living fossils are ideal for studying the principal features of metazoans, such as extracellular matrix interactions, signal-receptor systems, nervous or sensory systems, and primitive immune systems.
But some invertebrate paleontologists have placed them in an extinct, separate phylum, known appropriately as the Archaeocyatha. [11] However, one cladistic analysis [12] suggests that Archaeocyatha is a clade nested within the phylum Porifera (better known as the true sponges). True archaeocyathans coexisted with other enigmatic sponge-like ...
Archeocyatha are known only as fossils from the Cambrian period. [80] In the 1970s, sponges with massive calcium carbonate skeletons were assigned to a separate class, Sclerospongiae, otherwise known as "coralline sponges". [81] However, in the 1980s, it was found that these were all members of either the Calcarea or the Demospongiae. [82]
Hippospongia communis also known as the honeycomb bath sponge, is a marine sponge in the phylum Porifera. Hippospongia communis is a brown or darker color [1] and very porous, due to its many oscules, and is commonly found in shallow waters of the Mediterranean. Throughout history, H. communis has been used for cleaning, medicine, and cooking ...
Venus' flower basket (Euplectella aspergillum) is a species of marine glass sponge found in the deep waters of the Pacific Ocean, usually at depths below 500 m (1,600 ft).