Aspidosiphonidae is a family of peanut worms. It is the only family in the monotypic order Aspidosiphonida, which is in the class Phascolosomatidea.
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.
Species
Aspidosiphon
- Aspidosiphon albus <small>Murina, 1967</small>
- Aspidosiphon coyi <small>de Quatrefages, 1865</small>
- Aspidosiphon elegans <small>(Chamisso and Eysenhardt, 1821)</small>
- Aspidosiphon exiguus <small>Edmonds 1974</small>
- Aspidosiphon fischeri <small>Broeke, A. ten, 1925</small>
- Aspidosiphon gosnoldi <small>Cutler, E., 1981</small>
- Aspidosiphon gracilis <small>(Baird, 1868)</small>
- Aspidosiphon laevis <small>de Quatrefages, 1865</small>
- Aspidosiphon mexicanus <small>Murina, 1967</small>
- Aspidosiphon misakiensis <small>Ikeda 1904</small>
- Aspidosiphon muelleri <small>Diesing 1851</small>
- Aspidosiphon parvulus <small>Gerould, 1913</small>
- Aspidosiphon planoscutatus <small>Murina, 1968</small>
- Aspidosiphon spiralis <small>Sluiter, 1902</small>
- Aspidosiphon steenstrupii <small>Diesing, 1859</small>
- Aspidosiphon tenuis <small>Sluiter, 1886</small>
- Aspidosiphon thomassini <small>Cutler and Cutler, 1979</small>
- Aspidosiphon venabulum <small>Selenka & Bulow, 1883</small>
- Aspidosiphon zinni <small>Cutler, 1969</small>
Cloeosiphon
Lithacrosiphon
References
External links