Trackway evidence for social sauropods from the Morrison Formation, Eastern Utah (USA).

A new sauropod tracksite from the Late Jurassic Salt Wash Member of the Morrison Formation of eastern Utah yields evidence of three sauropods, of approximately the same size, that were walking westwards, probably as a social group. This is only the second example of parallel sauropod trackways from the Morrison Formation, and the first example from Utah. The site is also interesting because most o…