Placospongiidae

	Placospongiidae Placospongiidae is a family of sponges belonging to the order Clionaida Clionaida is an order of demosponge Demosponges or common sponges are sponges of the class Demospongiae (from + ), the most diverse group in the phylum Porifera which include greater than 90% of all extant sponges with nearly 8,800 .... Genera: * ''Onotoa'' Laubenfels, 1955 * '' Placospherastra'' van Soest, 2009 * '' Placospongia'' Gray, 1867 References Sponge families {{demosponge-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Clionaida Clionaida is an order of demosponge Demosponges or common sponges are sponges of the class Demospongiae (from + ), the most diverse group in the phylum Porifera which include greater than 90% of all extant sponges with nearly 8,800 species A species () is often de ...s in the subclass Heteroscleromorpha. Familiae Familiae within this order include: * ''Acanthochaetetidae'' Fischer, 1970 * ''Clionaidae'' d'Orbigny, 1851 * ''Placospongiidae'' Gray, 1867 * ''Spirastrellidae'' Ridley & Dendy, 1886 References External links * Heteroscleromorpha Sponge orders {{demosponge-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Placospongia ''Placospongia'' is a genus of sea sponges belonging to the family Placospongiidae. This genus is characterized by a high density of siliceous spicules. Members of this genus are known to be eaten by hawksbill turtle The hawksbill sea turtle (''Eretmochelys imbricata'') is a critically endangered sea turtle belonging to the family Cheloniidae. It is the only extant species in the genus ''Eretmochelys''. The species has a global distribution that is largely ...s. Species '' Placospongia carinata'' '' Placospongia melobesioides'' References Hadromerida Taxa described in 1867 {{demosponge-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Sponges Sponges or sea sponges are primarily marine invertebrates of the animal phylum Porifera (; meaning 'pore bearer'), a basal clade and a sister taxon of the diploblasts. They are sessile filter feeders that are bound to the seabed, and are one of the most ancient members of macrobenthos, with many historical species being important reef-building organisms. Sponges are multicellular organisms consisting of jelly-like mesohyl sandwiched between two thin layers of cells, and usually have tube-like bodies full of pores and channels that allow water to circulate through them. They have unspecialized cells that can transform into other types and that often migrate between the main cell layers and the mesohyl in the process. They do not have complex nervous, digestive or circulatory systems. Instead, most rely on maintaining a constant water flow through their bodies to obtain food and oxygen and to remove wastes, usually via flagella movements of the so-called " collar ce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]