Ontogeny of Hypselocrinus hoveyi, Mississippian Cladid Crinoid from Indiana

William I. Ausich; Troy E. Wood

doi:10.1666/12-044R.1

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William I. Ausich,¹ Troy E. Wood^2,3

¹School of Earth Sciences, 155 South Oval Mall, The Ohio State University, Columbus 43210 < >; ausich.1@osu.edu
²Institute of Evolution and Biodiversity, University of Münster, Hüfferstrasse 1, 48149 Münster, Germany, < > trowood@umail.iu.edu
³current address: 1411 West Weston Trail, Flagstaff, AZ 86001, USA

Abstract

A very early juvenile specimen of Hypselocrinus hoveyi with arms and partial column attached is utilized to examine the growth in this Mississippian advanced cladid crinoid. The aboral cup height of this specimen is 4 mm. In contrast to results reported in previous studies of crinoids, Hypselocrinus hoveyi grew with a combination of allometric and isometric growth. Different plates of the aboral cup grew with a combination of growth modes, and arms grew with allometric growth or relative change in shape that was not strict allometry.

Citation Download Citation

William I. Ausich and Troy E. Wood "Ontogeny of Hypselocrinus hoveyi, Mississippian Cladid Crinoid from Indiana," Journal of Paleontology 86(6), 1017-1020, (1 November 2012). https://doi.org/10.1666/12-044R.1

Accepted: 1 May 2012; Published: 1 November 2012

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