The first fossil of the extant leatherback sea turtle Dermochelys coriacea
Journal
Acta Palaeontologica Polonica
Journal Volume
71
Journal Issue
2
Start Page
267
End Page
271
ISSN
0567-7920
1732-2421
Date Issued
2026-06-17
Author(s)
Liaw, Yi-Lu
Abstract
The leatherback sea turtle (Dermochelys coriacea) is the largest living sea turtle, but their evolutionary history remains poorly known due to the lack of any confirmed fossil record of the extant species. Here we describe a fossil humerus from the Pleistocene of Taiwan. Its preserved morphology shows a close match to the extant leatherback sea turtle, including the humeral head tilted to the intertubercular side, a slightly-curved secondary deltopectoral crest, and the absence of a deep intertubercular fossa. This Pleistocene humerus from Taiwan then presents the first fossil record of the extant leatherback sea turtle worldwide. The record suggests that the modern global migration pattern of the leatherback sea turtle has already included the western North Pacific. Our discovery of the first fossil leatherback sea turtle should encourage more fossil finds to reveal the detailed evolutionary history of the leatherback sea turtle and the ecosystem they utilize.
Publisher
Polska Akademia Nauk Instytut Paleobiologii (Institute of Paleobiology, Polish Academy of Sciences)
Type
journal article