Skip navigation

Please use this identifier to cite or link to this item:
Title: Drill Holes and Predation Traces versus Abrasion-Induced Artifacts Revealed by Tumbling Experiments
Authors: Gorzelak, Przemysław
Salamon, Mariusz A.
Trzęsiok, Dawid
Niedźwiedzki, Robert
Keywords: Drill Holes; Predation; abrasion; tumbling
Issue Date: 2013
Citation: PLoS ONE, Vol. 8, iss. 3 (2013), art. no e58528
Abstract: Drill holes made by predators in prey shells are widely considered to be the most unambiguous bodies of evidence of predator-prey interactions in the fossil record. However, recognition of traces of predatory origin from those formed by abiotic factors still waits for a rigorous evaluation as a prerequisite to ascertain predation intensity through geologic time and to test macroevolutionary patterns. New experimental data from tumbling various extant shells demonstrate that abrasion may leave holes strongly resembling the traces produced by drilling predators. They typically represent singular, circular to oval penetrations perpendicular to the shell surface. These data provide an alternative explanation to the drilling predation hypothesis for the origin of holes recorded in fossil shells. Although various non-morphological criteria (evaluation of holes for non-random distribution) and morphometric studies (quantification of the drill hole shape) have been employed to separate biological from abiotic traces, these are probably insufficient to exclude abrasion artifacts, consequently leading to overestimate predation intensity. As a result, from now on, we must adopt more rigorous criteria to appropriately distinguish abrasion artifacts from drill holes, such as microstructural identification of micro-rasping traces
DOI: 10.1371/journal.pone.0058528
ISSN: 1932-6203
Appears in Collections:Artykuły (WNP)

Files in This Item:
File Description SizeFormat 
Gorzelak_Drill_Holes_and_Predation_Traces_versus_Abrasion_Induced_Artifacts.pdf1,85 MBAdobe PDFView/Open
Show full item record

Uznanie Autorstwa 3.0 Polska Creative Commons License Creative Commons