Polychaete phylogeny based on morphological data - a comparison of current attempts

Autor(en): Bartolomaeus, T
Purschke, G 
Hausen, H
Stichwörter: Annelida; ANTERIOR END; CENTRAL-NERVOUS-SYSTEM; CLITELLATA; DEVELOPMENTAL STAGES; Echiura; EVOLUTION; HOOKED SETAE; HRABEIELLA-PERIGLANDULATA ANNELIDA; Marine & Freshwater Biology; phylogeny; Pogonophora; POSITION; SENSE-ORGANS; ULTRASTRUCTURAL ANALYSIS; ultrastructure
Erscheinungsdatum: 2005
Herausgeber: SPRINGER
Journal: HYDROBIOLOGIA
Volumen: 535
Startseite: 341
Seitenende: 356
Zusammenfassung: 
Annelid phylogeny is one of the largest unresolved problems within the Metazoa. This is due to the enormous age of this taxon and also strongly influenced by the current discussion on the position of the Arthropoda, which traditionally is hypothesized to be the annelid sister taxon. Within the framework of recent discussions on the position of the Annelida, the ground pattern of this taxon is either a clitellatc-like, parapodia-less dwelling organism or an organisms that resembles errant polychaetes in having parapodia and gills and probably being a predator. To solve this problem different attempts have been made in the past, cladistic analysis, scenario based plausibility considerations and a successive search for sister taxa base on isolated characters. These attempts are presented and critically discussed. There is at least strong support for the Annelida as wells as for several of its taxa above the level of traditional families; the monophyly of the Polychaeta, however, remains questionable.
Beschreibung: 
Symposium on Morphology, Molecules, Evolution and Phylogeny in Polychaeta and Related Taxa, Osnabruck, GERMANY, SEP, 2002
ISSN: 00188158
DOI: 10.1007/s10750-004-1847-5

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