Aspidosiphonidae Explained

Aspidosiphonidae is a family of peanut worms. It is the only family in the monotypic order Aspidosiphonida, which is in the class Phascolosomatidea.^{[1] [2] [3] [4] [5]}

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 in a continuous band. The anal and caudal shield (at the anterior end) are both made up, not of chitin, but of a horny protein. It is of note that most, but not all, of the Aspidosiphonidae family has a caudal shield. The family also has two nephridia.^{[1] [2] [4] [5]}

Species

Aspidosiphon

• Aspidosiphon albus Murina, 1967^{[4] [5] [6]}
• Aspidosiphon coyi de Quatrefages, 1865^{[4] [5]}
• Aspidosiphon elegans (Chamisso and Eysenhardt, 1821)^{[4] [5]}
• Aspidosiphon exiguus Edmonds 1974^{[4] [5]}
• Aspidosiphon fischeri Broeke, A. ten, 1925^{[4] [5]}
• Aspidosiphon gosnoldi Cutler, E., 1981^{[4] [5]}
• Aspidosiphon gracilis (Baird, 1868)^{[4] [5]}
• Aspidosiphon laevis de Quatrefages, 1865^{[4] [5]}
• Aspidosiphon mexicanus Murina, 1967^{[4] [5]}
• Aspidosiphon misakiensis Ikeda 1904^{[4] [5]}
• Aspidosiphon muelleri Diesing 1851^{[4] [5]}
• Aspidosiphon parvulus Gerould, 1913^{[4] [5] [6]}
• Aspidosiphon planoscutatus Murina, 1968^{[4] [5]}
• Aspidosiphon spiralis Sluiter, 1902^{[4] [5] [6]}
• Aspidosiphon steenstrupii Diesing, 1859^{[4] [5]}
• Aspidosiphon tenuis Sluiter, 1886^{[4] [5]}
• Aspidosiphon thomassini Cutler and Cutler, 1979^{[4] [5]}
• Aspidosiphon venabulum Selenka & Bulow, 1883^{[4] [5]}
• Aspidosiphon zinni Cutler, 1969^{[4] [5] [6]}

Cloeosiphon

• Cloeosiphon aspergillus (de Quatrefages, 1865)^{[4] [5]}

Lithacrosiphon

• Lithacrosiphon cristatus (Sluiter, 1902)^{[4] [5]}
• Lithacrosiphon maldivensis Shipley 1902^{[4] [5]}

External links

• Sipuncula LifeDesk: Aspidosiphonidae

Notes and References

1. Gibbs, P.E. (1977): British sipunculans. Academic Press. London. 35p.
2. Ditadi, A.S.F. & Migotto, A.E. (1982): O Filo Sipuncula. Concelho Nacional de Desemvolvimento Cientifico e Tecnologico CNPq Brasilia. 43p.
3. Cutler, Edward B. & Gibbs, Peter E. (1985): A Phylogenetic analysis of higher taxa in the Phylum Sipuncula. Systematic Zoology 34(2):162-173.
4. Cutler, Edward B. & Cutler, Norma J (1989): A revision of the genus Aspidosiphon (Sipuncula: Aspidosiphonidaea). Proceedings of Biological Society of Washington 102(4):826-865 Bistor
5. Cutler, Edward B. (1994): The Sipuncula: their systematic, biology and evolution. 406p Google Books
6. (1973): Sipuncula of the Western North Atlantic. Bulletin of American Museum of Natural History 152(3)103-201. New York.