Journal article
Lower Devonian aulacopleuroidean trilobites from Oklahoma
Journal of paleontology, Vol.71(4), pp.703-712
07/1997
DOI: 10.1017/S0022336000040154
Abstract
New aulacopleuroidean trilobites from the Lochkovian of Oklahoma include the otarionine Cyphaspis carrolli new species from the Haragan Formation, and the brachymetopid Cordania wessmani new species from the overlying Bois d'Arc Formation. Cyphaspis carrolli is the first record of the genus from the North American Devonian. It is a highly plesiomorphic species, dissimilar to contemporaries from Europe, but closely related to Silurian species from Northern Laurentia and England. Cordania wessmani had previously been interpreted as a possible sexual dimorph of Cordania falcata Whittington, 1960, but new material and information shows that the forms occur separately with no stratigraphic overlap. New information on trilobite occurrence in the Haragan and Bois d'Arc Formations does not support previous hypotheses of trilobite sexual dimorphism, but rather indicates the presence of distinct, stratigraphically successive faunas.
Details
- Title: Subtitle
- Lower Devonian aulacopleuroidean trilobites from Oklahoma
- Creators
- Jonathan M Adrain - Department of Palaeontology, The Natural History Museum, Cromwell Road, London SW7 5BD, United KingdomGerald J Kloc - University of Rochester
- Resource Type
- Journal article
- Publication Details
- Journal of paleontology, Vol.71(4), pp.703-712
- Publisher
- Cambridge University Press
- DOI
- 10.1017/S0022336000040154
- ISSN
- 0022-3360
- eISSN
- 1937-2337
- Number of pages
- 10
- Alternative title
- Adrain and Kloc–Devonian Trilobites
- Language
- English
- Date published
- 07/1997
- Academic Unit
- Earth and Environmental Sciences
- Record Identifier
- 9984229162602771
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