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A new cyclocystoid (Echinodermata) from the Late Ordovician of Kentucky, U.S.A.

Published online by Cambridge University Press:  14 July 2015

Andrew B. Smith  and
Mark A. Wilson
Andrew B. Smith
Affiliation:
Department of Palaeontology, The Natural History Museum, Cromwell Road, London SW7 5BD, U.K, and
Mark A. Wilson
Affiliation:
Department of Geology, The College of Wooster, Wooster, Ohio 44691
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Extract

Cyclocystoids are one of the rarest and most enigmatic of the extinct echinoderm groups. Despite recent systematic revision (Smith and Paul, 1982), their basic anatomy and functional morphology remain poorly understood. Smith and Paul (1982) recognized eight genera and 39 species ranging in age from Lower Ordovician to Late Devonian. Since then, one new genus and species, Monocycloides oelandicus, has been established by Berg-Madsen (1987), and the range of the genus Sievertsia has been extended to the Middle Devonian of the U.S.A (Fluegeman and Orr, 1990). In addition, undescribed cyclocystoid marginal ossicles have been found in the Lower Carboniferous of Ireland (G. D. Sevastopulo, personal communication). Here we record an additional new species from the Late Ordovician of Kentucky.

Type
Paleontological Notes
Information
Journal of Paleontology , Volume 69 , Issue 6 , November 1995 , pp. 1186 - 1187
Copyright
Copyright © The Paleontological Society 

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References

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