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Homocrinid crinoids from the Upper Ordovician of northern Iowa and southern Minnesota

Published online by Cambridge University Press:  14 July 2015

James C. Brower
James C. Brower*
Affiliation:
Heroy Geology Laboratory, Syracuse University, Syracuse, New York 13244-1070
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Abstract

Three homocrinid crinoids from the Upper Ordovician Maquoketa Formation of northern Iowa and southern Minnesota are described: Ectenocrinus simplex (Hall), Drymocrinus strimplei new species, and Sygcaulocrinus typus Ulrich. Ectenocrinus simplex is relatively abundant, geographically widespread in the Appalachians and midcontinent of North America, and long-ranging in time (Middle Ordovician Shermanian to Upper Ordovician Maysvillian). The aboral cup of ectenocrinids underwent transpositional allometry during its evolution so that juvenile cups from the Upper Ordovician Maquoketa Formation resemble the adult cups of ancestral individuals from the Middle Ordovician. Sygcaulocrinus typus exhibits a unique expanded proximal stem consisting of three-to-five large columnals throughout its post-larval development. These columnals are rigidly joined to the aboral cup. Consequently, the proximal generative zone for new columnals is displaced below the proximal part of the stem. In addition, the columnals in the proximal stem of S. typus mainly grow with stong positive allometry with respect to the aboral cup. Essentially, the growth vectors of the proximal columnals converge on those of the aboral cup plates.

Type
Research Article
Information
Journal of Paleontology , Volume 71 , Issue 3 , May 1997 , pp. 442 - 458
Copyright
Copyright © The Paleontological Society 

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References

Alberch, P., Gould, S. J., Oster, G. F., and Wake, D. B. 1979. Size and shape in ontogeny and phylogeny. Paleobiology, 5:296–317.CrossRefGoogle Scholar
Bassler, R. S., and Moodey, M. W. 1943. Bibliographic and faunal index of Paleozoic pelmatozoan echinoderms. Geological Society of America Special Paper, 45:1–734.CrossRefGoogle Scholar
Bookstein, F., Chernoff, B., Elder, R., Humphries, J., Smith, G., and Strauss, R. 1985. Morphometrics in evolutionary biology. The Academy of Natural Sciences of Philadelphia Special Publication, 15, 277 p.Google Scholar
Brett, C. E. 1981. Terminology and functional morphology of attachment structures in pelmatozoan echinoderms. Lethaia, 14:343–370.CrossRefGoogle Scholar
Brower, J. C. 1987. The relations between allometry, phylogeny and functional morphology in some calceocrinid crinoids. Journal of Paleontology, 61:999–1032.CrossRefGoogle Scholar
Brower, J. C. 1992a. Cupulocrinid crinoids from the Middle Ordovician (Galena Group, Dunleith Formation) of northern Iowa and southern Minnesota. Journal of Paleontology, 66:99–128.CrossRefGoogle Scholar
Brower, J. C. 1992b. Hybocrinid and disparid crinoids from the Middle Ordovician (Galena Group, Dunleith Formation) of northern Iowa and southern Minnesota. Journal of Paleontology, 66:973–993.CrossRefGoogle Scholar
Brower, J. C. 1994. Camerate crinoids from the Middle Ordovician (Galena Group, Dunleith Formation) of northern Iowa and southern Minnesota. Journal of Paleontology, 68:570–599.CrossRefGoogle Scholar
Brower, J. C. 1995a. Eoparisocrinid crinoids from the Middle Ordovician (Galena Group, Dunleith Formation) of northern Iowa and southern Minnesota. Journal of Paleontology, 69:351–366.CrossRefGoogle Scholar
Brower, J. C. 1995b. Dendrocrinid crinoids from the Ordovician of northern Iowa and southern Minnesota. Journal of Paleontology, 69:939–960.CrossRefGoogle Scholar
Brower, J. C. 1996. Carabocrinid crinoids from the Ordovician of northern Iowa and southern Minnesota. Journal of Paleontology, 70:614–631.CrossRefGoogle Scholar
Brower, J. C., and Strimple, H. L. 1983. Ordovician calceocrinids from northern Iowa and southern Minnesota. Journal of Paleontology, 57:1261–1281.Google Scholar
Brower, J. C., and Veinus, J. 1978. Multivariate analysis of allometry using point coordinates. Journal of Paleontology, 52:1037–1053.Google Scholar
Brower, J. C., and Veinus, J. 1981. Allometry in pterosaurs. The University of Kansas Paleontological Contributions Paper, 105, 32 p.Google Scholar
Davis, J. C. 1986. Statistics and data analysis in geology, second edition. John Wiley & Sons, New York, 646 p.Google Scholar
Eckert, J. D. 1984. Early Llandovery crinoids and stelleroids from the Cataract Group (Lower Silurian) in southern Ontario, Canada. Royal Ontario Museum Life Sciences Contributions, 137, 82 p.Google Scholar
Foerste, A. F. 1925. Upper Ordovician faunas of Ontario and Quebec. Canada Department of Mines, Geological Survey, Memoir, 138 (Geological Series 121), p. 1–81, 101-255.Google Scholar
Gould, S. J. 1966. Allometry and size in ontogeny and phylogeny. Biological Reviews, 41:587–640.CrossRefGoogle ScholarPubMed
Gould, S. J. 1971. Geometric similarity in allometric growth: a contribution to the problem of scaling in the evolution of size. American Naturalist, 105:113–136.CrossRefGoogle Scholar
Gould, S. J. 1977. Ontogeny and Phylogeny. The Belknap Press of Harvard University Press, Cambridge, Massachusetts, 498 p.Google Scholar
Greenewalt, C. H. 1962. Dimensional relationships for flying animals. Smithsonian Miscellaneous Collections, 144(2):1–46.Google Scholar
Hall, J. 1847. Palaeontology of New-York. Volume I. Containing descriptions of the organic remains of the Lower Division of the New-York System (equivalent of the Lower Silurian rocks of Europe). New York Natural History Survey, C. van Benthuysen, Albany, 338 p.Google Scholar
Hallam, A. 1968. Morphology, palaeoecology and evolution of the genus Gryphaea in the British Lias. Philosophical Transactions of the Royal Society, London, Series B, 254:91–128.Google Scholar
Hayami, I., and Matsukuma, A. 1970. Variation of bivariate characters from the standpoint of allometry. Palaeontology, 13:588–605.Google Scholar
Imbrie, J. 1956. Biometrical methods in the study of invertebrate fossils. American Museum of Natural History Bulletin, 108:211–252.Google Scholar
Jerison, H. J. 1976. Paleoneurology and the evolution of mind. Scientific American, 234:90–91, 94-101.CrossRefGoogle ScholarPubMed
Jolicoeur, P. 1963. The degree of robustness in Martes americana. Growth, 27:1–27.Google Scholar
Kirk, E. 1914. Notes on the fossil crinoid genus Homocrinus Hall. United States National Museum Proceedings, 46:473–483.CrossRefGoogle Scholar
Kolata, D. R., Brower, J. C., and Frest, T. J. 1987. Upper Mississippi Valley Champlainian and Cincinnatian echinoderms. Minnesota Geological Survey Report of Investigations, 35:179–181.Google Scholar
Lane, N. G. 1970. Lower and Middle Ordovician crinoids from west-central Utah. Brigham Young University Geological Studies, 17:3–17.Google Scholar
Levorson, C. O., Gerk, A. J., Sloan, R. E., and Bisaono, L. A. 1987. General section of the Middle and Late Ordovician strata of northeastern Iowa. Minnesota Geological Survey Report of Investigations, 35:25–39.Google Scholar
McKinney, M. L., and McNamara, K. J. 1991. Heterochrony: the evolution of ontogeny. Plenum Press, New York and London, 437 p.CrossRefGoogle Scholar
McMasters, J. H. 1974. An analytical survey of low-speed flying devices, natural and man-made. Technical Soaring, 3:17–42.Google 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 & Company, Bristol, 150 p.Google Scholar
Miller, S. A. 1889. North American geology and palaeontology. Western Methodist Book Concern, Cincinnati, Ohio, 664 p.Google Scholar
Moore, R. C. 1962. Ray structures of some inadunate crinoids. University of Kansas Paleontological Contributions Article, 5, 47 p.Google Scholar
Moore, R. C., and Lane, N. G. 1978. Superfamily Homocrinacea, p. T522–T524. In Moore, R. C., and Teichert, C. (eds.), Treatise on Invertebrate Paleontology, Part T, Echinodermata 2. The Geological Society of America and University of Kansas, Lawrence.Google Scholar
Moore, R. C., and Laudon, L. R. 1943. Evolution and classification of Paleozoic crinoids. Geological Society of America Special Paper, 46:1–167.CrossRefGoogle Scholar
Moore, R. C. and Laudon, L. R. 1944. Class Crinoidea, p. 137–209. In Shimer, H. W. and Shrock, R. R. (eds.), Index fossils of North America, John Wiley & Sons, Incorporated, New York.Google Scholar
Sevastopulo, G. D., and Lane, N. G. 1988. Ontogeny and phylogeny of disparid crinoids, p. 245–253. In Paul, C. R. C. and Smith, A. B. (eds.), Echinoderm phylogeny and evolutionary biology. Clarendon Press, Oxford.Google Scholar
Slocom, A. W. 1924. New echinoderms from the Maquoketa Beds of Fayette County, Iowa. Part one. Iowa Geological Survey Volume 29 (Annual Reports for 1919 and 1920):320–344.Google Scholar
Sneath, P. H. A. 1977. A method for testing the distinctness of clusters: a test of the disjunction of two clusters in euclidean space as measured by their overlap. Mathematical Geology, 9:123–143.CrossRefGoogle Scholar
Sneath, P. H. A. 1979. The sampling distribution of the W-Statistic of Disjunction for the arbitrary division of a Random Rectangular Distribution. Mathematical Geology, 1:423–429.CrossRefGoogle Scholar
Strimple, H. L. 1974. The crinoid genus Sygcaulocrinus from Iowa. Iowa Academy of Sciences Proceedings, 81:116–118.Google Scholar
Thomas, A. O., and Ladd, H. S. 1926. Additional cystoids and crinoids from the Maquoketa Shale of Iowa. University of Iowa Studies in Natural History, 11:5–18.Google Scholar
Ubaohs, G. 1978. Skeletal morphology of fossil crinoids, p. T58–T216. In Moore, R. C., and Teichert, C. (eds.), Treatise on Invertebrate Paleontology, Part T, Echinodermata 2. The Geological Society of America and University of Kansas, Lawrence.Google Scholar
Ulrich, E. O. 1879. Descriptions of new genera and species of fossils from the Lower Silurian about Cincinnati. Cincinnati Society of Natural History Journal, 2:8–30.Google Scholar
Ulrich, E. O. 1925. New classification of the “Heterocrinidae”. Geological Survey of Canada Memoir, 138:82–101.Google Scholar
Warn, J. M. 1982. Long-armed disparid inadunates. University of Kansas Paleontological Contributions Monograph, 1:77–89.Google Scholar
Warn, J. M., and Strimple, H. L. 1977. The disparid inadunate superfamilies Homocrinacea and Cincinnaticrinacea (Echinodermata: Crinoidea), Ordovician-Silurian, North America. Bulletins of American Paleontology, 72:1–138.Google Scholar
Webster, G. D. 1973. Bibliography and index of Paleozoic crinoids 1942-1968. Geological Society of America Memoir 137, 341 p.Google Scholar