An unusual dental pathology in a tooth of Spinosaurus (Dinosauria, Theropoda) from the mid-Cretaceous of Morocco

Roy E. Smith; David M. Martill

doi:10.1016/j.cretres.2023.105499

An unusual dental pathology in a tooth of Spinosaurus (Dinosauria, Theropoda) from the mid-Cretaceous of Morocco

Roy E. Smith, David M. Martill^*

^*Corresponding author for this work

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Abstract

A single tooth identified as cf. Spinosaurus sp. from the Ifezouane Formation of the Kem Kem Group of eastern Morocco is noteworthy for a series of extensive palaeopathologies. These include an enhanced lingual curvature to the crown and the development of three deep grooves extending from at least the crown root junction to the apex of the crown. An attenuated carina is present but this does not extend to the crown tip, and neither does it start at the crown base. A wear facet is also present at the tip. This is the first report of external dental pathologies in the tooth of a spinosaurine spinosaurid.

Original language	English
Article number	105499
Number of pages	6
Journal	Cretaceous Research
Volume	146
Early online date	1 Mar 2023
DOIs	https://doi.org/10.1016/j.cretres.2023.105499
Publication status	Published - 1 Jun 2023

Keywords

Cretaceous
dental palaeopathology
Dinosauria
Kem Kem Group
Morocco
Theropoda

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10.1016/j.cretres.2023.105499

An unusual dental pathology Post-PrintAccepted author manuscript (Post-print), 443 KBLicence: CC BY-NC-ND

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title = "An unusual dental pathology in a tooth of Spinosaurus (Dinosauria, Theropoda) from the mid-Cretaceous of Morocco",

abstract = "A single tooth identified as cf. Spinosaurus sp. from the Ifezouane Formation of the Kem Kem Group of eastern Morocco is noteworthy for a series of extensive palaeopathologies. These include an enhanced lingual curvature to the crown and the development of three deep grooves extending from at least the crown root junction to the apex of the crown. An attenuated carina is present but this does not extend to the crown tip, and neither does it start at the crown base. A wear facet is also present at the tip. This is the first report of external dental pathologies in the tooth of a spinosaurine spinosaurid.",

keywords = "Cretaceous, dental palaeopathology, Dinosauria, Kem Kem Group, Morocco, Theropoda",

author = "Smith, {Roy E.} and Martill, {David M.}",

note = "Funding Information: We thank all our friends in the Tafilalt of Morocco who make our visits so enjoyable. Special thanks to Dr Samir Zouhri of Casablanca for his hospitality, assistance, and above all, friendship. We thank Dr Nizar Ibrahim for all discussions spinosaurid. We thank reviewer Christophe Hendrickx, an anonymous referee and editor in chief Eduardo Koutsoukos for their helpful comments which greatly improved the paper. Publisher Copyright: {\textcopyright} 2023 Elsevier Ltd",

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doi = "10.1016/j.cretres.2023.105499",

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AU - Martill, David M.

N1 - Funding Information: We thank all our friends in the Tafilalt of Morocco who make our visits so enjoyable. Special thanks to Dr Samir Zouhri of Casablanca for his hospitality, assistance, and above all, friendship. We thank Dr Nizar Ibrahim for all discussions spinosaurid. We thank reviewer Christophe Hendrickx, an anonymous referee and editor in chief Eduardo Koutsoukos for their helpful comments which greatly improved the paper. Publisher Copyright: © 2023 Elsevier Ltd

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N2 - A single tooth identified as cf. Spinosaurus sp. from the Ifezouane Formation of the Kem Kem Group of eastern Morocco is noteworthy for a series of extensive palaeopathologies. These include an enhanced lingual curvature to the crown and the development of three deep grooves extending from at least the crown root junction to the apex of the crown. An attenuated carina is present but this does not extend to the crown tip, and neither does it start at the crown base. A wear facet is also present at the tip. This is the first report of external dental pathologies in the tooth of a spinosaurine spinosaurid.

AB - A single tooth identified as cf. Spinosaurus sp. from the Ifezouane Formation of the Kem Kem Group of eastern Morocco is noteworthy for a series of extensive palaeopathologies. These include an enhanced lingual curvature to the crown and the development of three deep grooves extending from at least the crown root junction to the apex of the crown. An attenuated carina is present but this does not extend to the crown tip, and neither does it start at the crown base. A wear facet is also present at the tip. This is the first report of external dental pathologies in the tooth of a spinosaurine spinosaurid.

KW - Cretaceous

KW - dental palaeopathology

KW - Dinosauria

KW - Kem Kem Group

KW - Morocco

KW - Theropoda

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JF - Cretaceous Research

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ER -

An unusual dental pathology in a tooth of Spinosaurus (Dinosauria, Theropoda) from the mid-Cretaceous of Morocco

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Keywords

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