Polychaete

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Polychaetes
Temporal range: Cambrian (or earlier?) – present
"A variety o marine wirms": plate frae Das Meer bi M.J. Schleiden (1804–1881).
"A variety o marine wirms": plate frae Das Meer bi M.J. Schleiden (1804–1881).
Scienteefic clessificationEdit this classification
Kinrick: Animalia
Phylum: Annelida
Cless: Polychaeta
Grube, 1850
Groups included
Cladeestically includit but tradeetionally excludit taxa

Chaetopteridae[1]

The Polychaeta or polychaetes are a paraphyletic[1] cless o annelid wirms, generally marine. Each bouk segment haes a pair o fleshy protrusions cried parapodia that bear mony bristles, cried chaetae, which are made o chitin. As such, polychaetes are whiles referred to as bristle wirms. Mair nor 10,000 species are descrived in this cless. Common representatives include the lugwirm (Arenicola marina) an the sandworm or clam wirm Alitta.

References[eedit | eedit soorce]

  1. 1.0 1.1 Struck, T. H.; Paul, C.; Hill, N.; Hartmann, S.; Hösel, C.; Kube, M.; Lieb, B.; Meyer, A.; Tiedemann, R.; Purschke, G. N.; Bleidorn, C. (2011). "Phylogenomic analyses unravel annelid evolution". Nature. 471 (7336): 95–98. Bibcode:2011Natur.471...95S. doi:10.1038/nature09864. PMID 21368831.