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Phascolosomatidea
Phascolosomatidea is a subclass of the class Sipuncula, the peanut worm The Sipuncula or Sipunculida (common names sipunculid worms or peanut worms) is a class containing about 162 species of unsegmented marine annelid worms. The name ''Sipuncula'' is from the genus name ''Sipunculus'', and comes from the Latin ' ...s, containing two orders:- * Aspidosiphonida containing the single family Aspidosiphonidae * Phascolosomatida containing the single family Phascolosomatidae Their hooks are arranged in regular rings. References Sipunculans Protostome classes {{Protostome-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sipuncula
The Sipuncula or Sipunculida (common names sipunculid worms or peanut worms) is a class containing about 162 species of unsegmented marine annelid worms. The name ''Sipuncula'' is from the genus name '' Sipunculus'', and comes from the Latin ''siphunculus'' meaning a "small tube". Sipuncula was once considered a phylum, but was demoted to a class of Annelida, based on recent molecular work. Sipunculans vary in size but most species are under in length. The body is divided into an unsegmented, bulbous trunk and a narrower, anterior section, called the "introvert", which can be retracted into the trunk. The mouth is at the tip of the introvert and is surrounded in most groups by a ring of short tentacles. With no hard parts, the body is flexible and mobile. Although found in a range of habitats throughout the world's oceans, the majority of species live in shallow water habitats, burrowing under the surface of sandy and muddy substrates. Others live under stones, in rock crev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peanut Worm
The Sipuncula or Sipunculida (common names sipunculid worms or peanut worms) is a class containing about 162 species of unsegmented marine annelid worms. The name ''Sipuncula'' is from the genus name ''Sipunculus'', and comes from the Latin ''siphunculus'' meaning a "small tube". Sipuncula was once considered a phylum, but was demoted to a class of Annelida, based on recent molecular work. Sipunculans vary in size but most species are under in length. The body is divided into an unsegmented, bulbous trunk and a narrower, anterior section, called the "introvert", which can be retracted into the trunk. The mouth is at the tip of the introvert and is surrounded in most groups by a ring of short tentacles. With no hard parts, the body is flexible and mobile. Although found in a range of habitats throughout the world's oceans, the majority of species live in shallow water habitats, burrowing under the surface of sandy and muddy substrates. Others live under stones, in rock crevic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sipunculans
The Sipuncula or Sipunculida (common names sipunculid worms or peanut worms) is a class containing about 162 species of unsegmented marine annelid worms. The name ''Sipuncula'' is from the genus name '' Sipunculus'', and comes from the Latin ''siphunculus'' meaning a "small tube". Sipuncula was once considered a phylum, but was demoted to a class of Annelida, based on recent molecular work. Sipunculans vary in size but most species are under in length. The body is divided into an unsegmented, bulbous trunk and a narrower, anterior section, called the "introvert", which can be retracted into the trunk. The mouth is at the tip of the introvert and is surrounded in most groups by a ring of short tentacles. With no hard parts, the body is flexible and mobile. Although found in a range of habitats throughout the world's oceans, the majority of species live in shallow water habitats, burrowing under the surface of sandy and muddy substrates. Others live under stones, in rock crev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aspidosiphonidae
''Aspidosiphonidae'' is a family of peanut worms. It is the only family in the monotypic order Aspidosiphonida, which is in the class Phascolosomatidea.Gibbs, P.E. (1977): British sipunculans. Academic Press. London. 35p. Ditadi, A.S.F. & Migotto, A.E. (1982): O Filo Sipuncula. Concelho Nacional de Desemvolvimento Cientifico e Tecnologico CNPq Brasilia. 43p.Cutler, Edward B. & Gibbs, Peter E. (1985): A Phylogenetic analysis of higher taxa in the Phylum Sipuncula. Systematic Zoology 34(2):162-173.Cutler, Edward B. & Cutler, Norma J (1989): A revision of the genus Aspidosiphon (Sipuncula: Aspidosiphonidaea). Proceedings of Biological Society of Washington 102(4):826-86Bistor/ref>Cutler, Edward B. (1994): The Sipuncula: their systematic, biology and evolution. 406pGoogle Books/ref> Description The family Aspidosiphonidae is characterized by an oval disk with short tentacles, arranged in a crescent-shape made of an enclosed nuchal organ. It has a canal of sacs in the coelom, lying i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phascolosomatidae
''Phascolosomatidae'' is a family of peanut worms. It is the only family in the order Phascolosomatida, which is in the class Phascolosomatidea. Species ''Antillesoma'' * ''Antillesoma antillarum'' (Grübe & Oersted, 1858) ''Apionsoma'' * '' Apionsoma capitata'' (Gerould, 1913) * '' Apionsoma misakianum'' (Ikeda, 1904) * '' Apionsoma murinae'' (Cutler, 1969) * '' Apionsoma pectinatum'' (Keferstein, 1867) * '' Apionsoma trichocephala'' Sluiter, 1902 ''Phascolosoma'' * '' Phascolosoma agassizii'' (Keferstein, 1866) * '' Phascolosoma albolineatum'' (Baird, 1868) * '' Phascolosoma annulatum'' (Hutton, 1879) * '' Phascolosoma arcuatum'' (Gray, 1828) * '' Phascolosoma glabrum'' (Sluiter, 1902) * ''Phascolosoma granulatum ''Phascolosoma granulatum'' is a species of peanut worm in the family Phascolosomatidae. It is found in shallow water in the northeastern Atlantic Ocean and the Mediterranean Sea. Description ''P. granulatum'' is a moderately large peanut worm g ...'' (Leuckart, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
