ORCID

Abstract

A new specimen of the Coleoidea from the Charmouth Mudstone Formation of the Dorset Coast has been identified as Loligosepia bucklandi (Voltz, 1840). The specimen includes the gladius and jaw fragments, which represent one of few records of its kind, but the head area, arms, hooks and suckers are not discernible. It can be favourably compared to other L. bucklandi fossils in the Natural History Museum in London and the J.F. Jackson Collection in the National Museum Wales in Cardiff. The range of L. bucklandi is determined to be from the Turneri Zone, Brooki Subzone to the Obtusum Zone, Stellare Subzone of the lower Sinemurian, with the new specimen stratigraphically a little older than the precisely located specimens in the J.F. Jackson Collection.

Publication Date

2024-04-04

Publication Title

Geological Quarterly

Volume

68

Issue

2

ISSN

1641-7291

Deposit Date

2024-06-21

Funding

The authors are grateful for the sage advice of D. Fuchs (Munich, Germany), who has confirmed the identification of the species, and P. Doyle (London University, United Kingdom). We thank M. Rogov and a further reviewer for providing constructive comments. C. Howells (National Museum Wales) and Z. Hughes (NHM, London) are thanked for providing information and images of specimens in their respective collections. This assistance has been very helpful in making sense of both this specimen and the stratigraphical distribution of the species within the Sinemurian succession. B. Tronrud and P. Smith at the Oxford University Museum of Natural History are thanked for providing the photo of the holotype of Loligosepia bucklandi (Voltz). J. Quinn is thanked for his assistance with the final versions of the figures used in this paper.

Keywords

Coleoidea, Dorset, Jurassic, Loligosepia, Sinemurian

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