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Brassfield Compsocrinina (Lower Silurian crinoids) from Ohio

Published online by Cambridge University Press:  19 May 2016

William I. Ausich
William I. Ausich*
Affiliation:
Department of Geology and Mineralogy, 125 South Oval Mall, The Ohio State University, Columbus 43210
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Abstract

Four compsocrinine camerate crinoids are described from the Lower Silurian Brassfield Formation of southwestern Ohio. These late early or early middle Llandoverian crinoids are assigned to the Periechocrinidae and include Tirocrinus trochos n. gen. and sp., Ibanocrinus petalos n. gen. and sp., Acacocrinus anebos n. sp., and the taxon Dimerocrinites? vagans Foerste, herein referred to periechocrinid incertae sedis.

These Brassfield forms are the oldest known members of the Periechocrinacea and Periechocrinidae. Diagnoses of these supergeneric concepts are broadened to include the morphologic variability embodied within the Brassfield forms but not otherwise present in later periechocrinaceans.

Type
Research Article
Information
Journal of Paleontology , Volume 61 , Issue 3 , May 1987 , pp. 552 - 562
Copyright
Copyright © The Paleontological Society 

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References

Ausich, W. I. 1984a. Calceocrinids from the Early Silurian (Llandoverian) Brassfield Formation of southwestern Ohio. Journal of Paleontology, 58:1167–1185.Google Scholar
Ausich, W. I. 1984b. The genus Clidochirus from the Early Silurian of Ohio (Crinoidea; Llandoverian). Journal of Paleontology, 58:1341–1346.Google Scholar
Ausich, W. I. 1985. New crinoids and revision of the superfamily Glyptocrinacea (Early Silurian, Ohio). Journal of Paleontology, 59:793–808.Google Scholar
Ausich, W. I. 1986a. Early Silurian rhodocrinitacean crinoids (Brassfield Formation, Ohio). Journal of Paleontology, 60:84–106.Google Scholar
Ausich, W. I. 1986b. Early Silurian inadunate crinoids (Brassfield Formation, Ohio). Journal of Paleontology, 60:719–735.CrossRefGoogle Scholar
Ausich, W. I. 1986c. New camerate crinoids of the suborder Glyptocrinina from the Lower Silurian Brassfield Formation (southwestern Ohio). Journal of Paleontology, 60:887–897.Google Scholar
Ausich, W. I. 1986. The crinoids of the Al Rose Formation (Lower Ordovician, Inyo County, California, U.S.A.). Alcheringa, 10:217–224.Google Scholar
Ausich, W. I., and Schumacher, G. A. 1984. New Lower Silurian rhombiferan cystoid (Echinodermata, Callocystitidae) from southwestern Ohio. Journal of Paleontology, 58:9–15.Google Scholar
Bassler, R. S., and Moodey, M. W. 1943. Bibliographic and faunal index of Paleozoic pelmatozoan echinoderms. Geological Society of America Special Paper 45, 734 p.CrossRefGoogle Scholar
Brower, J. C. 1974. Upper Ordovician xenocrinids (Crinoidea, Camerata) from Scotland. University of Kansas Paleontological Contributions, Paper 67, 25 p.Google Scholar
Brown, H. G. 1848–1849. Index palaeontologicus, unter Mitwirkung der Prof. Gopert, H. R. und von Meyer, H.: Handbuch einer Geschichte der Natur. Vol. 5, Abt. 1, no. 1,2, Pt. 3, A. Nomenclator palaeontologicus; A-M: 1–775, N–Z:776–1381; Stuttgart.Google Scholar
Eldredge, N., and Cracraft, J. 1980. Phylogenetic Patterns and the Evolutionary Process. Columbia University Press, New York, 349 p.Google Scholar
Foerste, A. F. 1919. Echinodermata of the Brassfield (Silurian) Formation of Ohio. Bulletin of the Scientific Laboratories of Denison University, 19:3–31.Google Scholar
Foerste, A. F. 1936. Several new Silurian cephalopods and crinoids, chiefly from Ohio and Hudson Bay. Ohio Journal of Science, 36:261–272.Google Scholar
Frest, T. J., and Strimple, H. L. 1977. Carpocrinus (Echinodermata: Crinoidea) from the Late Silurian of Somerset Island, Northwest Territories, Canada. Canadian Journal of Earth Sciences, 14:132–136.CrossRefGoogle Scholar
Miller, J. S. 1821. A natural history of the Crinoidea or lily-shaped animals, with observation on the genera Asteria, Euryale, Comatula, and Marsupites . Bryan and Co., Bristol, 150 p.Google Scholar
Moore, R. C., and Laudon, L. R. 1943. Evolution and classification of Paleozoic crinoids. Geological Society of America Special Paper 46, 153 p.Google Scholar
Rexroad, C. B. 1967. Stratigraphy and conodont paleontology of the Brassfield (Silurian) in the Cincinnati Arch area. Indiana Geological Survey Bulletin 36, 64 p.Google Scholar
Ubaghs, G. 1978a. Skeletal morphology, p. T58–T216. In Moore, R. C. and Teichert, C. (eds.), Treatise on Invertebrate Paleontology, Part T, Echinodermata 2. Geological Society of America and University of Kansas Press, Lawrence.Google Scholar
Ubaghs, G. 1978b. Camerata, p. T408–T519. In Moore, R. C. and Teichert, C. (eds.), Treatise on Invertebrate Paleontology, Part T, Echinodermata 2. Geological Society of America and University of Kansas Press, Lawrence.Google Scholar
Ubaghs, G. 1978c. Evolution of camerate crinoids, p. T281–T294. In Moore, R. C. and Teichert, C. (eds.), Treatise on Invertebrate Paleontology, Part T, Echinodermata 2. Geological Society of America and University of Kansas Press, Lawrence.Google Scholar
Wachsmuth, C., and Springer, F. 1885. Revision of the Palaeocrinoidea, Pt. 3, sec. 1. Discussion of the classification and relations of the brachiate crinoids, and conclusions of the generic descriptions. Philadelphia Academy of Sciences Proceedings, 223–364(1–162).Google Scholar
Wachsmuth, C., and Springer, F. 1897. The North American Crinoidea Camerata. Harvard College Museum Comparative Zoology Memoir 20, 21, 897 p.Google Scholar
Wiley, E. O. 1981. Phylogenetics: The Theory and Practice of Phylogenetic Systematics. John Wiley and Sons, New York, 439 p.Google Scholar
Witzke, B. J., and Strimple, H. L. 1981. Early Silurian camerate crinoids of eastern Iowa. Proceedings of the Iowa Academy of Science, 88:101–137.Google Scholar