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Gastropod drilling predation in the Upper Jurassic of Kutch, India

Ranita Saha, Shubhabrata Paul, Subhronil Mondal, Subhendu Bardhan, Shiladri S. Das, Sandip Saha and Debattam Sarkar
Gastropod drilling predation in the Upper Jurassic of Kutch, India
Palaios (2021) 36 (9): 301-312


Gastropod drillholes on prey shells provide an opportunity to test the importance of predation in an evolutionary context. Although records of drilling predation are widespread across the Phanerozoic, the temporal distribution and relative importance of this mode of predation is still controversial. Further, some studies indicate a decline of drilling predation in the Mesozoic but other studies do not. In this study, we present a new dataset of gastropod drilling predation on Kimmeridgian and Tithonian bivalves of Kutch, India. Our study suggests that drilling was one of the prevailing modes of predation in the Upper Jurassic of Kutch with strongly variable intensities, ranging from 2% in the Kimmeridgian Seebachia to 26% in the Tithonian Pinna. A significant, albeit small, increase in drilling intensity from the Kimmeridgian to the Tithonian assemblages is associated with a change in relative sea-level and depositional environment. The morphology of drillholes and recent discovery of body fossils from the same stratigraphic units suggest naticid gastropods as the most likely drillers. A literature survey, along with previously collected specimen from the Jurassic of Kutch, reveals a more complex history of drilling predation than previously assumed.

ISSN: 0883-1351
Serial Title: Palaios
Serial Volume: 36
Serial Issue: 9
Title: Gastropod drilling predation in the Upper Jurassic of Kutch, India
Affiliation: Indian Institute of Technology Kharagpur, Department of Geology and Geophysics, Kharagpur, India
Pages: 301-312
Published: 2021
Text Language: English
Publisher: Society for Sedimentary Geology, Tulsa, OK, United States
References: 113
Accession Number: 2021-063173
Categories: Invertebrate paleontology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table, geol. sketch map
N23°28'60" - N23°34'00", E70°24'00" - E70°25'00"
Secondary Affiliation: Indian Institute of Science Education and Research Kolkata, IND, IndiaJadavpur University, IND, IndiaIndian Statistical Institute, IND, IndiaGeological Survey of India, IND, India
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2021, 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: 2021
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