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GEOREF RECORD

Paleoecologic associations and secondary tiering of Cornulites on crinoids and bivalves in the Upper Ordovician (Cincinnatian) of southwestern Ohio, southeastern Indiana, and northern Kentucky

Robert W. Morris and Stephen H. Felton
Paleoecologic associations and secondary tiering of Cornulites on crinoids and bivalves in the Upper Ordovician (Cincinnatian) of southwestern Ohio, southeastern Indiana, and northern Kentucky
Palaios (December 2003) 18 (6): 546-558

Abstract

The stems of once-living Ordovician crinoids, especially the genera Ectenocrinus, Iocrinus, and Cincinnaticrinus, provided suitable attachment sites for the growth and development of both individuals and clusters of Cornulites--a tubiculous, suspension-feeding, worm-like organism. This association of cornulitids as opportunistic secondary tierers on crinoids was common from the Late Edenian into the Maysvillian in the Kope and Fairview portions of the Cincinnatian Series in the Cincinnati Arch area and less common in the Richmondian. Cornulitids utilizing this elevated location avoided some of the turbidity problems associated with an unstable, muddy substrate, and benefited from their ability to feed at a higher tier level. Several specimens of the byssate clam Ambonychia document the presence of Cornulites as secondary, low-level tierers on these bivalves, mainly during the Richmondian. Cornulitids positioned themselves on these ambonychiids to the take advantage of feeding currents generated by the host. Cornulitids were also epizoans on the epifaunal clam Caritodens.


ISSN: 0883-1351
Serial Title: Palaios
Serial Volume: 18
Serial Issue: 6
Title: Paleoecologic associations and secondary tiering of Cornulites on crinoids and bivalves in the Upper Ordovician (Cincinnatian) of southwestern Ohio, southeastern Indiana, and northern Kentucky
Affiliation: Wittenberg University, Department of Geology, Springfield, OH, United States
Pages: 546-558
Published: 200312
Text Language: English
Publisher: Society of Economic Paleontologists and Mineralogists, Tulsa, OK, United States
References: 45
Accession Number: 2004-059728
Categories: Invertebrate paleontology
Document Type: Serial
Bibliographic Level: Analytic
Annotation: Includes appendix
Illustration Description: illus. incl. 1 table, 1 plate
N38°30'00" - N39°30'00", W85°00'00" - W84°00'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute.
Update Code: 200418
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