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Cheirocystis fultonensis, a new glyptocystitoid rhombiferan from the Upper Ordovician of the Cincinnati Arch—comments on cheirocrinid ontogeny

Published online by Cambridge University Press:  14 July 2015

Colin D. Sumrall
Affiliation:
Department of Geoscience, University of Iowa, Iowa City 52242-1379, and Geier Collections and Research Center, Cincinnati Museum Center, 1720 Gilbert Ave., Cincinnati, Ohio 45202,
Gregory A. Schumacher
Affiliation:
Ohio Department of Natural Resources, Division of Geological Survey, 4383 Fountain Square Drive, Columbus 43224,

Abstract

A new glyptocystitidoid rhombiferan, Cheirocystis fultonensis, is described from the contact zone between the Point Pleasant Formation and lower Kope Formation exposed 50 km south east of Cincinnati, Ohio. This species, the second known glyptocystitidoid rhombiferan from the Cincinnatian Series and the youngest known species of Cheirocystis, shows significant suture modification where pectinirhombs are placed. Growth of large pectinirhombs along vertical sutures results in an unusual bowing-out of thecal plate sutures that is also seen in the related species Cheirocystis anatiformis. A juvenile specimen shows that ontogenetically the lateral shared ambulacra become less pronounced, pectinirhombs are added until the eight standard positions are expressed, and the periproct becomes proportionately smaller with age.

Type
Research Article
Copyright
Copyright © The Paleontological Society

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Footnotes

*

Present address: Department of Geological Sciences, University of Tennessee, Knoxville, TN 37996-1410

References

Algeo, T. J., and Brett, C. E. (eds.). 1999. Sequence, cycle, and event stratigraphy of Upper Ordovician and Silurian strata of the Cincinnati Arch region. Kentucky Geological Survey guidebook and road log for the Great Lakes Section of the Society for Sedimentary Geology and the Kentucky Society of Professional Geologists, 1999 field conference.Google Scholar
Bather, F. A. 1899. A phylogenetic classification of the Pelmatozoa. British Association for the Advancement of Science, Report, 68th Meeting section D (Bristol, 1898), p. 916923.Google Scholar
Bucher, W. H., Caster, K. E., and Jones, S. 1939. Elementary description of Cincinnatian fossils and strata and plates of commoner fossils in the vicinity of Cincinnati, Ohio. University of Cincinnati, 13 p.Google Scholar
Caster, K. E., Dalvé, E. A., and Pope, J. K. 1955. Elementary Guide to the Fossils and strata of the Ordovician in the Vicinity of Cincinnati, Ohio. Cincinnati Museum of Natural History, Cincinnati, 47 p.Google Scholar
Foerste, A. F. 1912. Strophomena and other fossils from the Cincinnatian and Mohawkian horizons, chiefly in Ohio, Indiana, and Kentucky. Bulletin of the Scientific Laboratories of Denison University, 17:17172.Google Scholar
Foerste, A. F. 1914a. The Rogers Gap fauna of central Kentucky. Journal of the Cincinnati Society of Natural History, 21:109156.Google Scholar
Foerste, A. F. 1914b. Notes on Agelacrinidae and Lepadocystinae, with descriptions of Thresherodiscus and Brockocystis . Bulletin of the Scientific Laboratories of Denison University, 17:399487.Google Scholar
Jaekel, O. 1899. Stammesgeschichte der Pelmatozoen. Band 1, Thecoidea und Cystoidea, J. Springer, Berlin, 442 p.Google Scholar
Kesling, R. V. 1962. Morphology and taxonomy of the cystoid Cheirocrinus anatiformis (Hall). University of Michigan Museum of Paleontology Contributions, 18:121.Google Scholar
Kesling, R. V. 1968. Cystoids, p. S85S267. In Moore, R. C. (ed.), Treatise on Invertebrate Paleontology, Pt. S, Echinodermata 1(1). Geological Society of America and University of Kansas.Google Scholar
Kesling, R. V., and Mintz, L. W. 1961. Notes on Lepadocystis moorei (Meek), an Upper Ordovician callocystitid cystoid. University of Michigan Museum of Paleontology Contributions, 17:123148.Google Scholar
McFarlan, A. C., and Freeman, L. B. 1935. Rogers Gap and Fulton Formations in central Kentucky. Geological Society of America Bulletin, 46:19752006.CrossRefGoogle Scholar
Meek, F. B. 1871. On some new Silurian crinoids and shells. American Journal of Science, ser. 3, 2:295299.CrossRefGoogle Scholar
Osborne, R. H., Weiss, M. P., and Outerbridge, W. F. 1973. Geologic map of the Felicity Quadrangle, Ohio-Kentucky. U.S. Geological Survey Geologic Quadrangle Map, GQ-1063, scale 1:24,000.Google Scholar
Outerbridge, W. F. 1971. Geologic map of the Brooksville Quadrangle, Bracken County, Kentucky. U.S. Geological Survey Geologic Quadrangle Map, GQ-905, scale 1:24,000.Google Scholar
Paul, C. R. C. 1972. Cheirocystella antiqua gen. et. sp. nov. from the Lower Ordovician of western Utah and its bearing on the evolution of the Cheirocrinidae (Rhombifera: Glyptocystitida). Brigham Young University Geology Studies, 19:1563.Google Scholar
Regnéll, G. 1945. Non-crinoid Pelmatozoa from the Paleozoic of Sweden. Meddelanden från Lunds Geologisk-Mineralogiska Institution, 108:1255.Google Scholar
Schuchert, C. 1904. On Siluric and Devonic Cystidea and Camarocrinus . Smithsonian Miscellaneous Collection, 47:201272.Google Scholar
Schumacher, G. A. 1994. Bedrock geology of the Felicity, Ohio-Kentucky Quadrangle. Ohio Division of Geological Survey Open-File Map, BG-A5G1, scale 1:24,000.Google Scholar
Schumacher, G. A., Potter, P. E., Noger, M. C., Dever, G., and Klee, J. 2002. Roadside geology along the Alexandria to Ashland Highway: Kentucky Highway 9, Kentucky Highway 10, and U. S. 23 between Greenup Locks and Dam and Interstate 64. Kentucky Geological Survey Special Publication 2, series 12:62p.Google Scholar
Sprinkle, J. 1973. Morphology and Evolution of Blastozoan Echinoderms. Harvard University Museum of Comparative Zoology, Special Publication, 283 p.Google Scholar
Sprinkle, J. 1982. Cylindrical and globular rhombiferans, p. 231273. In Sprinkle, J. (ed.), Echinoderm faunas from the Bromide Formation (Middle Ordovician) of Oklahoma. University of Kansas, Lawrence.Google Scholar
Sumrall, C. D., and Carlson, D. T. 2000. Suture modification by pectinirhomb growth in Lepadocystis decorus, a new species of callocystitid glyptocystitid rhombiferan (Echinodermata) from Illinois. Journal of Paleontology, 74:487491.CrossRefGoogle Scholar
Sumrall, C. D., and Sprinkle, J. 1999. Early ontogeny of the glyptocystitid rhombiferan Lepadocystis moorei, p. 409414. In Carnevali, M. D. C. and Bonasoro, F. (eds.), Echinoderm Research 1998. A. A. Balkema, Rotterdam.Google Scholar
Weiss, M. P., Edwards, W. R., Norman, C. E., and Sharp, E. R. 1965. The American Upper Ordovician Standard. VII. Stratigraphy and petrology of the Cynthiana and Eden Formations of the Ohio Valley. Geological Society of America Special Paper, 81:76 p.Google Scholar