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Griffin, B, Martin-Silverstone, E, Demuth, O, Pêgas, R, Palmer, C and Rayfield, E (2022) Constraining pterosaur launch: range of motion in the pectoral and pelvic girdles of a medium-sized ornithocheiraean pterosaur. Biological Journal of the Linnean Society, 137 (2). pp. 250-266. ISSN 0024-4066
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Constraining pterosaur launch range of motion in the pectoral and pelvic girdles of a medium-sized ornithocheiraean pterosaur.pdf - Published Version Available under License Creative Commons Attribution. Download (4MB) | Preview |
Abstract
Launch is the most energetically expensive part of flight and is considered a limiting factor in the size of modern flyers. Pterosaurs reached significantly larger sizes than modern flyers and are proposed to have launched either bipedallly or quadrupedally. We investigated the ability of a medium-sized ornithocheiraean pterosaur to assume the poses required to launch bipedally or quadrupedally. We applied range of motion (ROM) mapping methodology to the pectoral and pelvic girdles to identify viable poses at varying levels of appendicular cartilage based on the extant phylogenetic bracket. The ROMs were constrained by novel triangulated minimum stretch methodology, used to identify the restraining tissue ROM. Our study indicates that a medium-sized ornithocheiraean could assume the poses required to use a quadrupedal launch and, with an additional 10° of hindlimb abduction, a bipedal launch, although further analysis is required to determine whether sufficient muscular power and leverage was available to propel the animal into the air.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | 06 Biological Sciences; Evolutionary Biology |
| Subjects: | G Geography. Anthropology. Recreation > GE Environmental Sciences Q Science > QH Natural history > QH301 Biology |
| Divisions: | Biological and Environmental Sciences (from Sep 19) |
| Publisher: | Oxford University Press (OUP) |
| Date of acceptance: | 2 May 2022 |
| Date of first compliant Open Access: | 11 September 2024 |
| Date Deposited: | 11 Sep 2024 16:00 |
| Last Modified: | 11 Sep 2024 16:00 |
| DOI or ID number: | 10.1093/biolinnean/blac063 |
| URI: | https://ljmu-9.eprints-hosting.org/id/eprint/24121 |
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