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GEOREF RECORD

Paleoecological and sedimentological significance of bioturbated crinoid calyces

Christopher G. Maples and Allen W. Archer
Paleoecological and sedimentological significance of bioturbated crinoid calyces
Palaios (September 1989) 4 (4): 379-383

Abstract

Rapid burial of crinoids commonly is responsible for spectacular preservation of articulated specimens. However, some Paleozoic crinoids, especially large-calyx ( nearly equal camerate) crinoids, were scavenged after rapid, intact burial. Crinoids that were catastrophically buried and subsequently scavenged can be recognized in the fossil record by presence of (1) bioturbational texture, (2) abundant articulated stems, arms, and pinnules, (3) disarticulated calyx plates, and (4) articulated arms and pinnules oriented in hydrodynamically unstable positions. Large-calyx crinoids may have been selected by scavenging organisms preferentially because the large calyces housed gonads, which generally are the most nutritious parts of echinoderms.


ISSN: 0883-1351
Serial Title: Palaios
Serial Volume: 4
Serial Issue: 4
Title: Paleoecological and sedimentological significance of bioturbated crinoid calyces
Affiliation: Kans. Geol. Surv., Lawrence, KS, United States
Pages: 379-383
Published: 198909
Text Language: English
Publisher: Society of Economic Paleontologists and Mineralogists, Tulsa, OK, United States
References: 16
Accession Number: 1990-008506
Categories: Invertebrate paleontology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
Secondary Affiliation: Kans. State Univ., USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by SEPM (Society for Sedimentary Geology), Tulsa, OK, United States
Update Code: 1990
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