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Acarnus Michoacanensis
''Acarnus'' is a genus of sponges belonging to the family Acarnidae. The genus has almost cosmopolitan distribution (except Europe). Description Species are non-fistulose sponges with encrusting to massive growth forms. They have ectosomal tylotes (long, slender megascleres with knobs at both ends) with microspined ends. These form tangential or paratangential tracts. The choanosomal skeleton is isodictyal (triangular mesh in which each side is one spicule long), isotropic (no differentiation into primary or secondary tracts, lines or fibers), or anisotropic (primary and secondary tracts, lines or fibers). In encrusting species, it may occasionally be plumose (skeletal structures radiate from primary fibres or spicule tracts) or hymedesmioid (monoaxon megascleres arranged singly with the heads fixed to a spongin base and the points directed outwards). The skeletal tracts are covered with smooth styles, which may be spined by cladotylotes. Cladotylotes are unique to this genus. T ...
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Acarnus Erithacus
Acarnus erithacus is a species of sponge of the genus ''Acarnus ''Acarnus'' is a genus of sponges belonging to the family Acarnidae. The genus has almost cosmopolitan distribution (except Europe). Description Species are non-fistulose sponges with encrusting to massive growth forms. They have ectosomal tylo ...''. It was described by de Laubenfels in 1927.} References {{demospongiae-stub Poecilosclerida Species described in 1927 ...
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Acarnus Peruanus
''Acarnus'' is a genus of sponges belonging to the family Acarnidae. The genus has almost cosmopolitan distribution (except Europe). Description Species are non-fistulose sponges with encrusting to massive growth forms. They have ectosomal tylotes (long, slender megascleres with knobs at both ends) with microspined ends. These form tangential or paratangential tracts. The choanosomal skeleton is isodictyal (triangular mesh in which each side is one spicule long), isotropic (no differentiation into primary or secondary tracts, lines or fibers), or anisotropic (primary and secondary tracts, lines or fibers). In encrusting species, it may occasionally be plumose (skeletal structures radiate from primary fibres or spicule tracts) or hymedesmioid (monoaxon megascleres arranged singly with the heads fixed to a spongin base and the points directed outwards). The skeletal tracts are covered with smooth styles, which may be spined by cladotylotes. Cladotylotes are unique to this genus. T ...
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Poecilosclerida
Poecilosclerida is an order of the demosponge class. It is the most speciose demosponge order with over 2200 species (World Porifera Database). It contains about 25 recognised families. They are characterised by having chelae microscleres, that is, the minute spicules scattered through the tissues, usually in the 10-60  μm range, have a shovel-like structure on the end. Most of the families are viviparous with parenchymella larvae that are uniformly ciliated The cilium, plural cilia (), is a membrane-bound organelle found on most types of eukaryotic cell, and certain microorganisms known as ciliates. Cilia are absent in bacteria and archaea. The cilium has the shape of a slender threadlike projecti .... Families As of 2018, the following families are recognized: References {{demosponge-stub ...
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Acarnus Wolffgangi
''Acarnus'' is a genus of sponges belonging to the family Acarnidae. The genus has almost cosmopolitan distribution (except Europe). Description Species are non-fistulose sponges with encrusting to massive growth forms. They have ectosomal tylotes (long, slender megascleres with knobs at both ends) with microspined ends. These form tangential or paratangential tracts. The choanosomal skeleton is isodictyal (triangular mesh in which each side is one spicule long), isotropic (no differentiation into primary or secondary tracts, lines or fibers), or anisotropic (primary and secondary tracts, lines or fibers). In encrusting species, it may occasionally be plumose (skeletal structures radiate from primary fibres or spicule tracts) or hymedesmioid (monoaxon megascleres arranged singly with the heads fixed to a spongin base and the points directed outwards). The skeletal tracts are covered with smooth styles, which may be spined by cladotylotes. Cladotylotes are unique to this genus. T ...
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Acarnus Toxeata
''Acarnus'' is a genus of sponges belonging to the family Acarnidae. The genus has almost cosmopolitan distribution (except Europe). Description Species are non-fistulose sponges with encrusting to massive growth forms. They have ectosomal tylotes (long, slender megascleres with knobs at both ends) with microspined ends. These form tangential or paratangential tracts. The choanosomal skeleton is isodictyal (triangular mesh in which each side is one spicule long), isotropic (no differentiation into primary or secondary tracts, lines or fibers), or anisotropic (primary and secondary tracts, lines or fibers). In encrusting species, it may occasionally be plumose (skeletal structures radiate from primary fibres or spicule tracts) or hymedesmioid (monoaxon megascleres arranged singly with the heads fixed to a spongin base and the points directed outwards). The skeletal tracts are covered with smooth styles, which may be spined by cladotylotes. Cladotylotes are unique to this genus. T ...
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Acarnus Tortilis
''Acarnus'' is a genus of sponges belonging to the family Acarnidae. The genus has almost cosmopolitan distribution (except Europe). Description Species are non-fistulose sponges with encrusting to massive growth forms. They have ectosomal tylotes (long, slender megascleres with knobs at both ends) with microspined ends. These form tangential or paratangential tracts. The choanosomal skeleton is isodictyal (triangular mesh in which each side is one spicule long), isotropic (no differentiation into primary or secondary tracts, lines or fibers), or anisotropic (primary and secondary tracts, lines or fibers). In encrusting species, it may occasionally be plumose (skeletal structures radiate from primary fibres or spicule tracts) or hymedesmioid (monoaxon megascleres arranged singly with the heads fixed to a spongin base and the points directed outwards). The skeletal tracts are covered with smooth styles, which may be spined by cladotylotes. Cladotylotes are unique to this genus. T ...
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Acarnus Topsenti
''Acarnus'' is a genus of sponges belonging to the family Acarnidae. The genus has almost cosmopolitan distribution (except Europe). Description Species are non-fistulose sponges with encrusting to massive growth forms. They have ectosomal tylotes (long, slender megascleres with knobs at both ends) with microspined ends. These form tangential or paratangential tracts. The choanosomal skeleton is isodictyal (triangular mesh in which each side is one spicule long), isotropic (no differentiation into primary or secondary tracts, lines or fibers), or anisotropic (primary and secondary tracts, lines or fibers). In encrusting species, it may occasionally be plumose (skeletal structures radiate from primary fibres or spicule tracts) or hymedesmioid (monoaxon megascleres arranged singly with the heads fixed to a spongin base and the points directed outwards). The skeletal tracts are covered with smooth styles, which may be spined by cladotylotes. Cladotylotes are unique to this genus. T ...
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Acarnus Thielei
''Acarnus'' is a genus of sponges belonging to the family Acarnidae. The genus has almost cosmopolitan distribution (except Europe). Description Species are non-fistulose sponges with encrusting to massive growth forms. They have ectosomal tylotes (long, slender megascleres with knobs at both ends) with microspined ends. These form tangential or paratangential tracts. The choanosomal skeleton is isodictyal (triangular mesh in which each side is one spicule long), isotropic (no differentiation into primary or secondary tracts, lines or fibers), or anisotropic (primary and secondary tracts, lines or fibers). In encrusting species, it may occasionally be plumose (skeletal structures radiate from primary fibres or spicule tracts) or hymedesmioid (monoaxon megascleres arranged singly with the heads fixed to a spongin base and the points directed outwards). The skeletal tracts are covered with smooth styles, which may be spined by cladotylotes. Cladotylotes are unique to this genus. T ...
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Acarnus Ternatus
''Acarnus'' is a genus of sponges belonging to the family Acarnidae. The genus has almost cosmopolitan distribution (except Europe). Description Species are non-fistulose sponges with encrusting to massive growth forms. They have ectosomal tylotes (long, slender megascleres with knobs at both ends) with microspined ends. These form tangential or paratangential tracts. The choanosomal skeleton is isodictyal (triangular mesh in which each side is one spicule long), isotropic (no differentiation into primary or secondary tracts, lines or fibers), or anisotropic (primary and secondary tracts, lines or fibers). In encrusting species, it may occasionally be plumose (skeletal structures radiate from primary fibres or spicule tracts) or hymedesmioid (monoaxon megascleres arranged singly with the heads fixed to a spongin base and the points directed outwards). The skeletal tracts are covered with smooth styles, which may be spined by cladotylotes. Cladotylotes are unique to this genus. T ...
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Acarnus Tenuis
''Acarnus'' is a genus of sponges belonging to the family Acarnidae. The genus has almost cosmopolitan distribution (except Europe). Description Species are non-fistulose sponges with encrusting to massive growth forms. They have ectosomal tylotes (long, slender megascleres with knobs at both ends) with microspined ends. These form tangential or paratangential tracts. The choanosomal skeleton is isodictyal (triangular mesh in which each side is one spicule long), isotropic (no differentiation into primary or secondary tracts, lines or fibers), or anisotropic (primary and secondary tracts, lines or fibers). In encrusting species, it may occasionally be plumose (skeletal structures radiate from primary fibres or spicule tracts) or hymedesmioid (monoaxon megascleres arranged singly with the heads fixed to a spongin base and the points directed outwards). The skeletal tracts are covered with smooth styles, which may be spined by cladotylotes. Cladotylotes are unique to this genus. T ...
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Acarnus Tener
''Acarnus'' is a genus of sponges belonging to the family Acarnidae. The genus has almost cosmopolitan distribution (except Europe). Description Species are non-fistulose sponges with encrusting to massive growth forms. They have ectosomal tylotes (long, slender megascleres with knobs at both ends) with microspined ends. These form tangential or paratangential tracts. The choanosomal skeleton is isodictyal (triangular mesh in which each side is one spicule long), isotropic (no differentiation into primary or secondary tracts, lines or fibers), or anisotropic (primary and secondary tracts, lines or fibers). In encrusting species, it may occasionally be plumose (skeletal structures radiate from primary fibres or spicule tracts) or hymedesmioid (monoaxon megascleres arranged singly with the heads fixed to a spongin base and the points directed outwards). The skeletal tracts are covered with smooth styles, which may be spined by cladotylotes. Cladotylotes are unique to this genus. T ...
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Acarnus Souriei
''Acarnus'' is a genus of sponges belonging to the family Acarnidae. The genus has almost cosmopolitan distribution (except Europe). Description Species are non-fistulose sponges with encrusting to massive growth forms. They have ectosomal tylotes (long, slender megascleres with knobs at both ends) with microspined ends. These form tangential or paratangential tracts. The choanosomal skeleton is isodictyal (triangular mesh in which each side is one spicule long), isotropic (no differentiation into primary or secondary tracts, lines or fibers), or anisotropic (primary and secondary tracts, lines or fibers). In encrusting species, it may occasionally be plumose (skeletal structures radiate from primary fibres or spicule tracts) or hymedesmioid (monoaxon megascleres arranged singly with the heads fixed to a spongin base and the points directed outwards). The skeletal tracts are covered with smooth styles, which may be spined by cladotylotes. Cladotylotes are unique to this genus. T ...
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