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Body dimensions of the extinct giant shark Otodus megalodon: A 2D reconstruction

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Body dimensions of the extinct giant shark Otodus megalodon: A 2D reconstruction

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dc.contributor.author Cooper, J. A.
dc.contributor.author Pimiento, C.
dc.contributor.author Ferrón, Humberto G.
dc.contributor.author Benton, M. J.
dc.date.accessioned 2023-03-01T17:16:18Z
dc.date.available 2023-03-01T17:16:18Z
dc.date.issued 2020
dc.identifier.citation COOPER, J. A. PIMIENTO, C. FERRON, H. G. BENTON, M. J. 2020 Body dimensions of the extinct giant shark Otodus megalodon: A 2D reconstruction Scientific Reports 10 14596
dc.identifier.uri https://hdl.handle.net/10550/85576
dc.description.abstract Inferring the size of extinct animals is fraught with danger, especially when they were much larger than their modern relatives. Such extrapolations are particularly risky when allometry is present. The extinct giant shark ¿Otodus megalodon is known almost exclusively from fossilised teeth. Estimates of ¿O. megalodon body size have been made from its teeth, using the great white shark (Carcharodon carcharias) as the only modern analogue. This can be problematic as the two species likely belong to different families, and the position of the ¿Otodus lineage within Lamniformes is unclear. Here, we infer ¿O. megalodon body dimensions based on anatomical measurements of five ecologically and physiologically similar extant lamniforms: Carcharodon carcharias, Isurus oxyrinchus, Isurus paucus, Lamna ditropis and Lamna nasus. We first assessed for allometry in all analogues using linear regressions and geometric morphometric analyses. Finding no evidence of allometry, we made morphological extrapolations to infer body dimensions of ¿O. megalodon at different sizes. Our results suggest that a 16 m ¿O. megalodon likely had a head ~ 4.65 m long, a dorsal fin ~ 1.62 m tall and a tail ~ 3.85 m high. Morphometric analyses further suggest that its dorsal and caudal fins were adapted for swift predatory locomotion and long-swimming periods.
dc.language.iso eng
dc.relation.ispartof Scientific Reports, 2020, vol. 10, p. 14596
dc.subject Paleontologia
dc.title Body dimensions of the extinct giant shark Otodus megalodon: A 2D reconstruction
dc.type journal article es_ES
dc.date.updated 2023-03-01T17:16:18Z
dc.identifier.doi 10.1038/s41598-020-71387-y
dc.identifier.idgrec 136147
dc.rights.accessRights open access es_ES

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