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GEOREF RECORD

Microconchid tubeworms (class Tentaculita) from the Joggins Formation (Pennsylvanian), Nova Scotia, Canada

Michal Zaton, Melissa Grey and Olev Vinn
Microconchid tubeworms (class Tentaculita) from the Joggins Formation (Pennsylvanian), Nova Scotia, Canada
Canadian Journal of Earth Sciences = Revue Canadienne des Sciences de la Terre (July 2014) 51 (7): 669-676

Abstract

Microconchids have been described from the classic Pennsylvanian locality at Joggins, Nova Scotia. These encrusting tentaculitoid tubeworms have previously been mentioned and described from Joggins under the polychaete genus SPIRORBIS: Detailed morphological and microstructural investigation revealed that they belong to the species Microconchus carbonarius Murchison, confirming the previous tentative assignment (as Spirorbis carbonarius) made by Sir J. William Dawson in the nineteenth century. The occurrence of the same species in Upper Carboniferous deposits of England provides evidence supporting a connection between England and Nova Scotia in the Late Carboniferous (Pennsylvanian). Migration of the species could have been possible via brackish seas connecting both areas during maximum sea level during the Pennsylvanian. The species inhabited retrograding poorly drained coastal plain and open-water brackish environments, encrusting bivalve shells and plant remains in both sandstone and limestone deposits. Their high density (up to 19 individuals/cm (super 2) ) may have resulted from their aggregative behaviour, high fecundity, and a lack of any competition with other skeleton-bearing encrusters. The large number (34%) of regenerated tubes indicates that microconchids were often preyed upon by associated animals, most probably fishes, which could graze on their dense encrusting aggregations.


ISSN: 0008-4077
EISSN: 1480-3313
Coden: CJESAP
Serial Title: Canadian Journal of Earth Sciences = Revue Canadienne des Sciences de la Terre
Serial Volume: 51
Serial Issue: 7
Title: Microconchid tubeworms (class Tentaculita) from the Joggins Formation (Pennsylvanian), Nova Scotia, Canada
Affiliation: University of Silesia, Sosnowiec, Poland
Pages: 669-676
Published: 201407
Text Language: English
Publisher: National Research Council of Canada, Ottawa, ON, Canada
References: 41
Accession Number: 2014-058230
Categories: Invertebrate paleontology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. strat. col., sketch map
N45°40'00" - N45°46'00", W64°30'00" - W64°19'60"
Secondary Affiliation: Joggins Fossil Centre, CAN, CanadaUniversity of Tartu, EST, Estonia
Country of Publication: Canada
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from Canadian Science Publishing, NRC Research Press, Ottawa, ON, Canada. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201431
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