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GEOREF RECORD

Bivalves on the move; the interplay of extrinsic and intrinsic factors on the morphology of the trace fossil Protovirgularia

Maria I. Lopez Cabrera, M. Gabriela Mangano, Luis A. Buatois, Eduardo B. Olivero and Christopher G. Maples
Bivalves on the move; the interplay of extrinsic and intrinsic factors on the morphology of the trace fossil Protovirgularia
Palaios (July 2019) 34 (7): 349-363

Abstract

Tide-influenced deposits of the Pennsylvanian Rock Lake Shale Member, Stanton Formation, Missouri and Kansas (U.S.A.), contain well-preserved evidence of the burrowing activities of protobranch bivalves, including locomotion (Protovirgularia) and locomotion-resting (Protovirgularia-Lockeia) trace fossils. Protovirgularia shows three distinct morphotypes, the morphological variability of which was controlled by external factors such as substrate conditions, toponomy, and undertrack deficiency. Extreme morphological modifications of Protovirgularia and/or Lockeia, represented by irregular bilobate structures, probably result from erosion and subsequent partial passive filling of the original biogenic structures. In addition, very well-preserved trace fossils showing intergradation of a fan-shaped cluster of ridges with Protovirgularia-Lockeia structures are interpreted as a compound biogenic structure that represents locomotion, resting, and feeding activities of burrowing protobranch bivalves.


ISSN: 0883-1351
Serial Title: Palaios
Serial Volume: 34
Serial Issue: 7
Title: Bivalves on the move; the interplay of extrinsic and intrinsic factors on the morphology of the trace fossil Protovirgularia
Affiliation: Centro Austral de Investigaciones Cientificas, Laboratorio de Geologia Andina, Ushuaia, Argentina
Pages: 349-363
Published: 201907
Text Language: English
Publisher: Society for Sedimentary Geology, Tulsa, OK, United States
References: 34
Accession Number: 2020-006501
Categories: Invertebrate paleontology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. strat. col., 6 plates, geol. sketch map
N38°55'00" - N39°32'60", W95°12'00" - W94°37'00"
Secondary Affiliation: University of Saskatchewan, CAN, CanadaMissouri University of Science and Technology, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2020, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data supplied by SEPM (Society for Sedimentary Geology), Tulsa, OK, United States
Update Code: 202006
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