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New Early Triassic coelacanth in the family Laugiidae (Sarcopterygii, Actinistia) from the Sulphur Mountain Formation near Wapiti Lake, British Columbia, Canada

Andrew J. Wendruff and Mark V. H. Wilson
New Early Triassic coelacanth in the family Laugiidae (Sarcopterygii, Actinistia) from the Sulphur Mountain Formation near Wapiti Lake, British Columbia, Canada
Canadian Journal of Earth Sciences = Revue Canadienne des Sciences de la Terre (September 2013) 50 (9): 904-910

Abstract

A new Early Triassic coelacanth, Belemnocerca prolata, gen. et sp. nov., is described as a new member of the family Laugiidae. Although only one incomplete specimen is known, much can be deduced about its evolutionary relationships. In particular, the new coelacanth is most similar to one member of its family, Laugia groenlandica, in the asymmetry (dorsal lobe longer than ventral) and the gradually tapering shape of its caudal fin, though it differs in caudal fin ray count and anal fin position as well as in the size and shape of the supplementary lobe. Belemnocerca prolata is the westernmost occurrence of the family Laugiidae and only member of this family known to inhabit Panthalassa, west of the supercontinent Pangaea. The family Laugiidae has a temporal range from the Early Triassic to the Late Jurassic, and its members have been described from both Greenland and Germany.


ISSN: 0008-4077
EISSN: 1480-3313
Coden: CJESAP
Serial Title: Canadian Journal of Earth Sciences = Revue Canadienne des Sciences de la Terre
Serial Volume: 50
Serial Issue: 9
Title: New Early Triassic coelacanth in the family Laugiidae (Sarcopterygii, Actinistia) from the Sulphur Mountain Formation near Wapiti Lake, British Columbia, Canada
Affiliation: University of Alberta, Department of Biological Sciences, Edmonton, AB, Canada
Pages: 904-910
Published: 201309
Text Language: English
Summary Language: French
Publisher: National Research Council of Canada, Ottawa, ON, Canada
References: 40
Accession Number: 2013-095721
Categories: Vertebrate paleontology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. strat. col., sketch map
N54°31'60" - N54°31'60", W120°45'00" - W120°45'00"
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: 201355
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