Echiuroidea
{{Short description|Order of annelid worms}}
{{Automatic taxobox
| image = Bonélie (Bonellia viridis) PC301461.JPG
| image_caption = Bonellia viridis (adult female)
| taxon = Echiuroidea
| authority = Fisher, 1946
| subdivision_ranks = Suborders
| subdivision = *Bonelliida
}}
Echiuroidea is an order of annelids in the class Polychaeta.
Families
- Suborder Bonelliida
- Bonelliidae 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.
- Ikedidae Bock, 1942Bock, S. (1942). On the Structure and Affinities of Thalassema lankesteri Herdman and the Classification of the Group Echiuroidea. Göteborg: Elanders.
- Suborder Echiurida
- Echiuridae 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.
- Thalassematidae 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.
- Urechidae 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.