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Additions and refinements to Sycodes glabra (Shumard, 1858), a poorly known Late Cretaceous (Campanian) marine gastropod from the northeast Pacific; taxonomic and biostratigraphic implications

Richard L. Squires and Raymond Graham
Additions and refinements to Sycodes glabra (Shumard, 1858), a poorly known Late Cretaceous (Campanian) marine gastropod from the northeast Pacific; taxonomic and biostratigraphic implications
Canadian Journal of Earth Sciences = Revue Canadienne des Sciences de la Terre (August 2014) 51 (8): 775-782

Abstract

The Late Cretaceous marine gastropod Sycodes glabra (Shumard, 1858) from the northeast Pacific has been poorly known because the type, which was never figured, was lost in a fire in 1892, and the type locality was very poorly located. A neotype is selected from specimens collected by the early Canadians, geologist J. Richardson and eminent British Columbian naturalist Dr. C.F. Newcombe. Newly discovered material, as well as museum specimens, provide fundamental geologic and paleontologic information. The number of available specimens is 19, and nearly all are from submarine-fan deposits in the Upper Cretaceous Nanaimo Group exposed along the southeastern-coastal region of Vancouver Island, British Columbia, and on Big Sucia Island, northwestern Washington State, with nearly half of the specimens from the latter locale. A single specimen is from northern California. This present study better establishes the type locality for S. glabra and documents this name as the senior subjective synonym of ?Ficus cypraeoides Gabb, 1864. The geologic range of S. glabra is early Campanian (Submortoniceras chicoense ammonite Zone) to early late Campanian (Metaplacenticeras cf. pacificum ammonite Zone). Sycodes seems to be a monotypic genus, but Pyrula (Protopirula) capensis Rennie, 1930, from mid-Santonian to lower Campanian strata in South Africa, might be congeneric. Sycodes is questionably assigned herein to the family Ficidae Meek, 1864, and could be the earliest known ficid.


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: 8
Title: Additions and refinements to Sycodes glabra (Shumard, 1858), a poorly known Late Cretaceous (Campanian) marine gastropod from the northeast Pacific; taxonomic and biostratigraphic implications
Affiliation: California State University at Northridge, Department of Geological Sciences, Northridge, CA, United States
Pages: 775-782
Published: 201408
Text Language: English
Summary Language: French
Publisher: National Research Council of Canada, Ottawa, ON, Canada
References: 63
Accession Number: 2014-069556
Categories: Invertebrate paleontology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sketch map
N48°16'60" - N49°30'00", W126°00'00" - W122°42'00"
Secondary Affiliation: Royal British Columbia Museum, CAN, Canada
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: 201437
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