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26 October 2020 Shark-Bitten Hesperornithiform Bird Bone from a Turonian (Upper Cretaceous) Marine Deposit of Northeastern South Dakota, U.S.A.
Kenshu Shimada, H. Douglas Hanks
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Abstract

In this paper, a shark-bitten partial tibiotarsus of a hesperornithiform bird is described from the Upper Cretaceous of Grant County, South Dakota, U.S.A. Whether the bite marks represent a predatory attack or scavenging is uncertain, but they are attributed to an anacoracid shark, Squalicorax cf. S. falcatus. The specimen is significant because it further indicates that hesperornithiform birds were common food sources for carnivores in the Late Cretaceous Western Interior Seaway of North America, and that Squalicorax was a trophic generalist.

Kenshu Shimada and H. Douglas Hanks "Shark-Bitten Hesperornithiform Bird Bone from a Turonian (Upper Cretaceous) Marine Deposit of Northeastern South Dakota, U.S.A.," Transactions of the Kansas Academy of Science 123(3-4), 414-418, (26 October 2020). https://doi.org/10.1660/062.123.0310
Published: 26 October 2020
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