annelid
The annelids (Annelida , from Latin ', "little ring"), also known as the segmented worms, are a large phylum, with over 22,000 extant species including ragworms, earthworms, and leeches. The species exist in and have adapted to various ecol ...
s in the
class
Class or The Class may refer to:
Common uses not otherwise categorized
* Class (biology), a taxonomic rank
* Class (knowledge representation), a collection of individuals or objects
* Class (philosophy), an analytical concept used differentl ...
Polychaeta
Polychaeta () is a paraphyletic class of generally marine annelid worms, commonly called bristle worms or polychaetes (). Each body segment has a pair of fleshy protrusions called parapodia that bear many bristles, called chaetae, which are m ...
.
Families
*Suborder
Bonelliida
Bonelliida is a suborder of the order Echiuroidea, an order of polychaete worms.
Families
The following families are classified within the suborder:
* Bonelliidae Lacaze-Duthiers, 1858
* Ikedidae Bock
Bock is a strong beer in Germany, u ...
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Bonelliidae
Bonelliidae is a family of marine worms (Class Echiura, phylum Annelida) noted for being sexually dimorphic, with males being tiny in comparison with the females. They occupy burrows in the seabed in many parts of the world's oceans, often at gr ...
Lacaze-Duthiers, 1858Lacaze-Duthiers, H. (1858). Recherches sur la bonellie (''Bonellia viridis'') (1). ''Annales des Sciences Naturells, Comprenant la Zoologie, la Botanique, l'Anatomie, et la Physiologie Comparées des Deux Règnes, et l'Histoire des Corps Organisés Fossiles'', 4(10), 49–110.
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Ikedidae
Ikedidae is a family of spoon worms in the suborder Bonelliida. It is a monotypic family, the only genus being ''Ikeda''. These worms burrow into soft sediment on the seabed.
Examination of the original material of '' Ikeda taenoides'' by Ter ...
Bock, 1942Bock, S. (1942). ''On the Structure and Affinities of ''Thalassema lankesteri'' Herdman and the Classification of the Group Echiuroidea''. Göteborg: Elanders.
*Suborder
Echiurida
Echiurida is a suborder of the order Echiuroidea, an order of polychaete worms.
Families
The following families are classified within the suborder:
*Echiuridae Quatrefages, 1847
*Thalassematidae Forbes & Goodsir, 1841
*Urechidae
Urechidae ...
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Echiuridae
Echiuridae is a family of spoon worms in the suborder Echiurida. It is a monotypic family, the only genus being ''Echiurus''. These worms burrow into soft sediment on the seabed.
Species
The World Register of Marine Species recognises the fol ...
de Quatrefages, 1847de Quatrefages, M. A. (1847). Études sur les types inférieurs de l'embranchment des annelés. Mémoire sur l'Echiure de Gærtner (''Echiurus gærtnerii'' Nob.). ''Annales des Sciences Naturells, Comprenant la Zoologie, la Botanique, l'Anatomie, et la Physiologie Comparées des Deux Règnes, et l'Histoire des Corps Organisés Fossiles'', 3(7), 307–343.
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Thalassematidae
Thalassematidae is a family of spoonworms in the suborder Echiurida.
Genera
The World Register of Marine Species
The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive lis ...
Forbes & Goodsir, 1841Forbes, E. & Goodsir, J. (1841). On the natural history and anatomy of ''Thalassema'' and ''Echiurus''. ''The Edinburgh New Philosophical Journal, Exhibiting a View of the Progressive Discoveries and Improvements in the Science and the Arts'', 30, 369–378.
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Urechidae
Urechidae (commonly known as "fat innkeeper" or "penis fish") is a family of spoonworms in the subclass Echiura. The only genus in the family is ''Urechis'', which has four species.
Species
The World Register of Marine Species
The World Regi ...
Monro, 1927Monro, C. C. A. (1927). On the families and genera of the class Echiuroidea. ''Annals and Magazine of Natural History'', 20(120), 615–620.