Liang, Q, Xing, L, Falkingham, PL, Du, C, Wen, K and Lin, J (2024) Forearm range of motion in Allosaurus fragilis (Dinosauria: Theropoda). Historical Biology. pp. 1-12. ISSN 0891-2963

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Abstract

Forelimb bones of the Early Jurassic theropod Allosaurus fragilis were digitally manipulated based on three-dimensional (3D) digital models. Bony articular surface margins were used as limits to determine the range of motion (ROM) for each forelimb joint, and to test functional hypotheses of forelimb usage. We discuss the effects of palaeopathology at the right shoulder joint on inferring ROM in the forelimb of Allosaurus. It is considered that the glenoid aberration of this sub-adult specimen occurred in early ontogeny and lasted for a long period of time, affecting to varying degrees the development of the whole right arm (but not the manus). The relatively large ranges of extension and flexion of manual joints indicate well grasping ability consistent with early-diverging theropods. The limited ROM of the shoulder joints of Allosaurus suggests that the forelimbs were predominantly prey-acquiring but could go no further forward, indicating that the first contact with prey was made by the mouth. The manus could assist in grasping prey on the chest or below the neck or hooking objects.

Item Type:	Article
Additional Information:	This is an Accepted Manuscript version of the following article, accepted for publication in Historical Biology. Liang, Q., Xing, L., Falkingham, P. L., Du, C., Wen, K., & Lin, J. (2024). Forearm range of motion in Allosaurus fragilis (Dinosauria: Theropoda). Historical Biology, 1–12. https://doi.org/10.1080/08912963.2024.2403599. It is deposited under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License (Deed - Attribution-NonCommercial-NoDerivatives 4.0 International - Creative Commons ), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited, and is not altered, transformed, or built upon in any way.
Uncontrolled Keywords:	0403 Geology; 06 Biological Sciences; 0602 Ecology; 0603 Evolutionary Biology; Paleontology
Subjects:	G Geography. Anthropology. Recreation > GE Environmental Sciences Q Science > QH Natural history > QH301 Biology Q Science > QP Physiology
Divisions:	Biological and Environmental Sciences (from Sep 19)
Publisher:	Taylor and Francis Group
SWORD Depositor:	A Symplectic
Date Deposited:	26 Sep 2024 09:20
Last Modified:	26 Sep 2024 09:30
DOI or ID number:	10.1080/08912963.2024.2403599
URI:	https://researchonline.ljmu.ac.uk/id/eprint/24278

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