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GEOREF RECORD

Late Cambrian (Furongian, Paibian, Steptoean) agnostoid arthropods from the Cow Head Group, western Newfoundland

Stephen R. Westrop and Jennifer D. Eoff
Late Cambrian (Furongian, Paibian, Steptoean) agnostoid arthropods from the Cow Head Group, western Newfoundland
Journal of Paleontology (March 2012) 86 (2): 201-237

Abstract

Nine agnostoid species from late Cambrian (Paibian: Steptoean) boulders from the Cow Head Group in western Newfoundland fall into three biostratigraphically distinct faunas. The Glyptagnostus reticulatus Fauna contains only the eponymous species and correlates with the lower part of the Paibian and the basal Steptoean of North America. The "Innitagnostus" inexpectans Fauna is more diverse and likely correlates into part of the lower Steptoean Aphelaspis Zone of western North America. The youngest fauna, the Acmarhachis kindlei n. sp. Fauna, also includes species of Homagnostus and Pseudagnostus, as well as a second new species of Acmarhachis, A. whittingtoni. It probably correlates with the Dunderbergia Zone (mid-Pabian and mid-Steptoean) of the western United States. The Laurentian species Acmarhachis typicalis Resser (1938) and A. acuta (Kobayashi, 1938) are evaluated from restudy of type material, and types of "Innitagnostus" inexpectans (Kobayashi, 1938) from British Columbia are also reillustrated.


ISSN: 0022-3360
EISSN: 1937-2337
Coden: JPALAZ
Serial Title: Journal of Paleontology
Serial Volume: 86
Serial Issue: 2
Title: Late Cambrian (Furongian, Paibian, Steptoean) agnostoid arthropods from the Cow Head Group, western Newfoundland
Affiliation: University of Oklahoma, School of Geology and Geophysics, Oklahoma Museum of Natural History, Norman, OK, United States
Pages: 201-237
Published: 201203
Text Language: English
Publisher: Paleontological Society, Lawrence, KS, United States
References: 103
Accession Number: 2012-034023
Categories: StratigraphyInvertebrate paleontology
Document Type: Serial
Bibliographic Level: Analytic
Annotation: NSF grants EAR-9973065 and EAR-0308685
Illustration Description: illus. incl. strat. cols., 1 table, sketch map
N49°49'60" - N49°49'60", W57°52'00" - W57°52'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, The Paleontological Society. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201218
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