Pes shape variation in an ornithopod dinosaur trackway (Lower Cretaceous, NW Spain) : new evidence of an antalgic gait in the fossil track record
Razzolini, Novella L. (Institut Català de Paleontologia Miquel Crusafont)
Vila, Bernat (Universidad de Zaragoza. Grupo Aragosaurus-IUCA)
Díaz-Martínez, Ignacio (Universidad Nacional de Río Negro. Instituto de Investigación en Paleobiología y Geología)
Manning, Phillip L. (University of Manchester. School of Earth, Atmospheric and Environmental Sciences)
Galobart, Àngel (Institut Català de Paleontologia Miquel Crusafont)

Date:	2016
Abstract:	Trackways can provide unique insight to animals locomotion through quantitative analysis of variation in track morphology. Long trackways additionally permit the study of trackmaker foot anatomy, providing more insight on limb kinematics. In this paper we have restudied the extensive tracksite at Barranco de La Canal-1 (Lower Cretaceous, La Rioja, NW Spain) focussing on a 25-m-long dinosaur (ornithopod) trackway that was noted by an earlier study (Casanovas et al. , 1995; Perez-Lorente, 2003) to display an irregular pace pattern. This asymmetric gait has been quantified and photogrammetric models undertaken for each track, thus revealing distinct differences between the right and the left tracks, particularly in the relative position of the lateral digits IIeIV with respect to the central digit III. Given that the substrate at this site is homogenous, the consistent repetition of the collected morphological data suggests that differences recorded between the right and the left tracks can be linked to the foot anatomy, but more interestingly, to an injury or pathology on left digit II. We suggest that the abnormal condition registered in digit II impression of the left pes can be linked to the statistically significant limping behaviour of the trackmaker. Furthermore, the abnormal condition registered did not affect the dinosaur's speed.
Grants:	Ministerio de Economía y Competitividad CGL2013-47521-P Ministerio de Economía y Competitividad CGL2011-30069-C02-01,02/BTE Ministerio de Economía y Competitividad CGL2010-16447 Ministerio de Economía y Competitividad CGL2005-07878-C02-01,02
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Lower Cretaceous ; Dinosaur ; Ornithopod ; Tracks ; LiDAR ; 3-D models ; Gait ; Pathology
Published in:	Cretaceous research, Vol. 58 (2016) , p. 125-134, ISSN 1095-998X

DOI: 10.1016/j.cretres.2015.10.012

10 p, 6.2 MB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Institut Català de Paleontologia Miquel Crusafont (ICP)
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Articles > Published articles