Skip to Main Content
GEOREF RECORD

Scratch traces of large Ediacara bilaterian animals

James G. Gehling, Bruce N. Runnegar and Mary L. Droser
Scratch traces of large Ediacara bilaterian animals (in An examination of life history and behavioral evolution across the Ediacaran-Cambrian transition, James D. Schiffbauer (editor) and Shuhai Xiao (editor))
Journal of Paleontology (March 2014) 88 (2): 284-298

Abstract

Ediacara fan-shaped sets of paired scratches Kimberichnus teruzzii from the Ediacara Member of the Rawnsley Quartzite, South Australia, and the White Sea region of Russia, represent the earliest known evidence in the fossil record of feeding traces associated with the responsible bilaterian organism. These feeding patterns exclude arthropod makers and point to the systematic feeding excavation of seafloor microbial mats by large bilaterians of molluscan grade. Since the scratch traces were made into microbial mats, animals could crawl over previous traces without disturbing them. The trace maker is identified as Kimberella quadrata, whose death masks co-occur with the mat excavation traces in both Russia and South Australia. The co-occurrence of animals and their systematic feeding traces in the record of the Ediacara biota supports previous trace fossil evidence that bilaterians existed globally before the Cambrian explosion of life in the ocean.


ISSN: 0022-3360
EISSN: 1937-2337
Coden: JPALAZ
Serial Title: Journal of Paleontology
Serial Volume: 88
Serial Issue: 2
Title: Scratch traces of large Ediacara bilaterian animals
Title: An examination of life history and behavioral evolution across the Ediacaran-Cambrian transition
Author(s): Gehling, James G.Runnegar, Bruce N.Droser, Mary L.
Author(s): Schiffbauer, James D.editor
Author(s): Xiao, Shuhaieditor
Affiliation: South Australian Museum, Division of Natural Science, Adelaide, South Aust., Australia
Affiliation: University of Missouri at Columbia, Department of Geological Sciences, Columbia, MO, United States
Pages: 284-298
Published: 201403
Text Language: English
Publisher: Paleontological Society, Lawrence, KS, United States
References: 121
Accession Number: 2014-036948
Categories: Invertebrate paleontology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 plate, geol. sketch map
S31°40'00" - S30°37'00", E138°00'00" - E139°15'00"
Secondary Affiliation: Virginia Polytechnic Institute and State University, USA, United StatesUniversity of California at Los Angeles, USA, United StatesUniversity of California at Riverside, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, The Paleontological Society. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201423
Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal