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The first diploaspidid (Chelicerata, Chasmataspidida) from North America (Silurian, Bertie Group, New York State) is the oldest species of Diploaspis

James C. Lamsdell and Derek E. G. Briggs
The first diploaspidid (Chelicerata, Chasmataspidida) from North America (Silurian, Bertie Group, New York State) is the oldest species of Diploaspis
Geological Magazine (January 2017) 154 (1): 175-180

Abstract

A single specimen of a new species of the chasmataspidid Diploaspis Stormer, 1972 is described from the upper Silurian (Pridoli) Phelps Member of the Fiddlers Green Formation (Bertie Group) in Herkimer County, New York State, USA. Diploaspis praecursor sp. nov. is distinguished by the shape of the posterolateral margins of the buckler, which are drawn out into angular epimera, and by the lack of elongate tubercles on the postabdomen. This discovery increases the taxonomic diversity of the Bertie Group by extending the geographic extent of Diploaspididae into North America. D. praecursor pre-dates previously known species of Diploaspis by more than 10 million years.


ISSN: 0016-7568
EISSN: 1469-5081
Coden: GEMGA4
Serial Title: Geological Magazine
Serial Volume: 154
Serial Issue: 1
Title: The first diploaspidid (Chelicerata, Chasmataspidida) from North America (Silurian, Bertie Group, New York State) is the oldest species of Diploaspis
Affiliation: Yale University, Department of Geology and Geophysics, New Haven, CT, United States
Pages: 175-180
Published: 201701
Text Language: English
Publisher: Cambridge University Press, London, United Kingdom
References: 32
Accession Number: 2017-006153
Categories: Invertebrate paleontology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sketch map
N42°49'60" - N44°04'60", W75°15'00" - W74°40'00"
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, Cambridge University Press. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201705
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