Hostname: page-component-cd9895bd7-jn8rn Total loading time: 0 Render date: 2024-12-26T04:24:09.738Z Has data issue: false hasContentIssue false
  • English
  • Français

A new otarionine trilobite from the Henryhouse Formation (Silurian, Ludlow) of Oklahoma

Published online by Cambridge University Press:  14 July 2015

Jonathan M. Adrain
Jonathan M. Adrain*
Affiliation:
Department of Palaeontology, The Natural History Museum, Cromwell Road, London SW7 5BD, United Kingdom
Get access Rights & Permissions [Opens in a new window]

Abstract

Cyphaspis wessmani new species is a morphologically aberrant taxon from the Ludlow Henryhouse Formation of south-central Oklahoma. Its long, scoop-shaped cephalic border is without close comparison in the family Aulacopleuridae, but its possession of eleven thoracic segments with an axial spine on the sixth, an inflated glabella with tiny L1 and dorsal tuberculate sculpture, a prominently expressed bilobate eye socle, and a micropygous pygidium all support assignment to Cyphaspis. The genus is common in Silurian rocks from most parts of the world, but C. wessmani is the first published record from southern Laurentia.

Type
Research Article
Information
Journal of Paleontology , Volume 70 , Issue 4 , July 1996 , pp. 611 - 614
Copyright
Copyright © The Paleontological Society 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Adrain, J. M., and Chatterton, B. D. E. 1994. The aulacopleurid trilobite Otarion, with new species from the Silurian of northwestern Canada. Journal of Paleontology, 68:305–323.CrossRefGoogle Scholar
Adrain, J. M., and Chatterton, B. D. E. 1995a. The otarionine trilobites Harpidella and Maurotarion, with species from northwestern Canada, the United States, and Australia. Journal of Paleontology, 69:307–326.CrossRefGoogle Scholar
Adrain, J. M., and Chatterton, B. D. E. 1995b. Aulacopleurine trilobites from the Llandovery of northwestern Canada. Journal of Paleontology, 69:326–340.CrossRefGoogle Scholar
Adrain, J. M., and Chatterton, B. D. E. 1996. The otarionine trilobite Cyphaspis, with new species from the Silurian of northwestern Canada. Journal of Paleontology, 70:100–110.CrossRefGoogle Scholar
Adrain, J. M., and Edgecombe, G. D. In press. Devonian aulacopleurid trilobites of the Malvinokaffric Realm. Geobios.Google Scholar
Alberti, G. K. B. 1969. Trilobiten des jüngeren Siluriums sowie des Unter- und Mitteldevons. I. Abhandlungen der Senckenbergischen Naturforschenden Gesellschaft, 520:1–692.Google Scholar
Amsden, T. W. 1960. Stratigraphy and paleontology of the Hunton Group in the Arbuckle Mountain Region. Part VI. Hunton stratigraphy. Oklahoma Geological Survey Bulletin, 84, 311 p.Google Scholar
Angelin, N. P. 1854. Palaeontologica Scandinavica. I: Crustacea formationis transitionis. Fascicule, 2:21–92.Google Scholar
Baldis, B. A. and Longobuoco, M. 1977. Trilobites devonicos de la Precordillera Noroccidental (Argentina). Ameghiniana, 14:145–161.Google Scholar
Burmeister, H. 1843. Die Organisation der Trilobiten. Georg Reimer, Berlin, 147 p.Google Scholar
Campbell, K. S. W. 1967. Henryhouse trilobites. Oklahoma Geological Survey Bulletin, 115, 68 p.Google Scholar
Campbell, K. S. W. 1977. Trilobites of the Haragan, Bois d'Arc and Frisco Formations (Early Devonian) Arbuckle Mountains Region, Oklahoma. Oklahoma Geological Survey Bulletin, 123, 227 p.Google Scholar
Foerste, A. F. 1923. Notes on Medinan, Niagaran and Chester fossils. Bulletin of the Scientific Laboratories of Denison University, 20:37–120.Google Scholar
Goldfuss, A. 1843. Systematische übersicht der Trilobiten und Beschreibung einiger neue Arten derselben. Neues Jahrbuch für Mineralogie, Geognosie, Geologie, und Petrefaktenkunde, for 1843:537–567.Google Scholar
Hall, J. 1864. Notice of some new fossils from the Niagara Group in Indiana, with a list of identified species form the same place. Transactions of the Albany Institute, 4:195–228.Google Scholar
Holloway, D. J. 1980. Middle Silurian trilobites from Arkansas and Oklahoma, U.S.A. Palaeontographica, Abteilung A, 170:1–85.Google Scholar
McCoy, F 1849. On the classification of some British fossil Crustacea, with notices of new forms in the University collection at Cambridge. Annals and Magazine of Natural History, Series 2, 4:161–179; 330-335; 392-414.CrossRefGoogle Scholar
Richter, R. and Richter, E. 1926. Die Trilobiten des Oberdevon. Beiträge zur Kenntnis devonischer Trilobiten. IV. Abhandlungen der Preussischen Geologischen Landessandstalt, 99:1–314.Google Scholar
Whittington, H. B., and Campbell, K. S. W. 1967. Silicified Silurian trilobites from Maine. Bulletin of the Museum of Comparative Zoology, Harvard, 135:447–483.Google Scholar
Zenker, J. C. 1833. Beiträge zur Naturgesichte der Urwelt. Organische Reste (Petrefacten) aus der Altenburger Braunkohlen-Formation dem Blankenburger Quadersandstein, Uebergangsgebirge. Jena, 67 p.Google Scholar