J., 2012: Ethological variations in gauge in sauropod trackways from the Berriasian of Spain. Lethaia, Vol. 45, 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.

This paper describes for the first time a stegosaur track from the Cretaceous of Europe. It focuses on a cast that preserves pes-manus tracks recovered in the Huérteles Alloformation of the Berriasian of Soria (northern Spain). This track has been assigned to Deltapodus isp. on the basis of the pes morphology. Nonetheless, in the manus lacks the claw-shaped imprint of the pollex that