Ethological variations in gauge in sauropod trackways from the Berriasian of Spain

Authors

  • DIEGO CASTANERA,

  • CARLOS PASCUAL,

  • JOSÉ I. CANUDO,

  • NIEVES HERNÁNDEZ,

  • JOSÉ L. BARCO


Diego Castanera [ dcastanera@unizar.es ] and José I. Canudo [ jicanudo@unizar.es ], Grupo Aragosaurus-IUCA, Paleontología, Facultad de Ciencias, Universidad de Zaragoza, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain; Carlos Pascual [ capascual-1@telefonica.net ] C/Real, 65, 42002 Soria, Spain; Nieves Hernández [ mnhernandez@terra.es ] C/Jorge Vigón, 37, 26003 Logroño (La Rioja), Spain; José L. Barco [ jlbarco@paleoymas.com ] Paleoymás, Polígono INBISA - Empresarium - C/Retama, 17 Nave 24C, 50720 Cartuja Baja, Zaragoza, Spain; manuscript received on 11/07/2011; manuscript accepted on 20/12/2011.

Abstract

Castanera, D., Pascual, C., Canudo, J.I., Hernández, N. & Barco, J., 2012: Ethological variations in gauge in sauropod trackways from the Berriasian of Spain. Lethaia, Vol. 45, pp. 476–489.

Two sauropod trackways from the Early Cretaceous (Berriasian) of the Cameros Basin (Spain) show important variations in trackway gauge, along the same trackway. These variations seem to be associated with different behaviours; on the one hand with a significant variation in the direction of travel (turning phenomena) and on the other hand with a decrease in speed, probably associated with the properties of the substrate. These variations in sauropod trackways provide the trackway gauge debate with new data, supporting the hypothesis that the walking style and substrate properties may in some cases determine this sauropod character. The study of turning sauropod trackways improves our knowledge of sauropod locomotion. □Ethology, intermediate-gauge, sauropod trackways, substrate properties, wide-gauge.

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