Radwańska, Urszula. (2004). Tube-dwelling polychaetes from the Upper Oxfordian of Wapienno/Bielawy, Couiavia region, north-central Poland. Acta Geologica Polonica. 54(1): 35-52, 6 plates.

51490

Radwańska, Urszula

2004

54(1): 35-52, 6 plates

Publication

https://geojournals.pgi.gov.pl/agp/article/view/10310

AnnelidaBase. Open access article.

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A relatively rich assemblage of tube-dwelling polychaetes is recognized in the talus facies of the Late Jurassic (Late Oxfordian) biohermal, sponge-cyanobacterial buildup from the Wapienno/Bielawy succession exposed in a salt-dome cored anticline of the Couiavia region, north-central Poland. Fourteen taxa are described belonging to 12 genera: Glomerula Brünnich Nielsen, 1931, sensu Regenhardt, 1961; Cementula Brünnich Nielsen, 1931, sensu Regenhardt, 1961; Ditrupula Brünnich Nielsen, 1931, sensu Howell, 1962; Filogranula Langerhans, 1884; Laqueoserpula Lommerzheim, 1979; Metavermilia Bush, 1904; Mucroserpula Regenhardt, 1961; Neovermilia Day, 1961; Pannoserpula Jäger, Kapitzke & Rieter, 2001; Pursimonia Regenhardt, 1961; Placostegus Philippi, 1844; Serpula Linnaeus, 1758. Only very few, or no representatives of these genera have formerly been reported from the Jurassic of Poland. Five species are established as new: Ditrupula meandrica sp.nov., Laqueoserpula intumescens sp.nov., Mucroserpula jaegeri sp.nov., Pannoserpula couiaviana sp.nov., Placostegus conchophilus sp.nov. The ecology of this assemblage, which comprises typically epizoans of sponges, and of brachiopods upon whose shells they often formed 'serpulid gardens', is discussed. In the case of the brachiopods, live specimens were favoured, to which the tube-dwelling polychaetes became commensals located preferably on their ventral valves. Some of the polychaetes had their own commensal, the hydroid Protulophila gestroi Rovereto, 1901, whose stolonal network was embedded in their tubes. The lithology of the source deposits indicates their transport by storm agitation and/or mass movements. Consequently, rapid burial affected all biota, including the living brachiopods, some of which were bearing living polychaetes.

Europe

Paleontology, Fossils, Paleobiology
Systematics, Taxonomy

Annelida
Polychaeta

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