Mid Ordovician commensal relationships between articulate brachiopods and a trepostome bryozoan from eastern Canada

Authors

  • Dave A.T. Harper Department of Geology, University College, Gahvay, Ireland
  • Ron K. Pickerill Department of Geology, University of New Brunswick, Fredericton, New Brunswick E3B 5A3, Canada

DOI:

https://doi.org/10.4138/2087

Abstract

A mid Ordovician microcommunity of sessile filter feeders, from the Trenton Group of eastern Canada, developed as a commensal relationship between an arborescent trepostome bryozoan and two taxa of articulate brachio-pod. An unusual specimen preserves a life assemblage of over 30 individuals of OnnieUa and provides an explanation for some occurrences of Lower Palaeozoic pedunculate brachiopods in dark shales. RÉSUMÉ Une microbtoclnose de l'Ordovicien moyen de filtreurs sessiles du groupe de Trenton dans l'Est du Canada, s'est développée par le biais d'unc relation commensale entre un bryozoaire trépostome arborescent et deux taxons de brachiopodes articulés. Un spécimen particulier préserve une communauté de plus de 30 sujets d'onnielles et permet d'expliquer la présence de certains brachiopodes pédoncutis du Paléozoique in fen cur dans des schistes foncés. [Traduit par la rédaction]

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Published

1996-11-01

How to Cite

Harper, D. A., & Pickerill, R. K. (1996). Mid Ordovician commensal relationships between articulate brachiopods and a trepostome bryozoan from eastern Canada. Atlantic Geoscience, 32(3). https://doi.org/10.4138/2087

Issue

Vol. 32 No. 3 (1996)

Section

Articles

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