The 246 million year old footprints of Sphingopus isp. from the Early Anisian of Baranów, Poland are associated with a trackway that is even more dinosaur-like in that the gait was bipedal.These tracks are the oldest record of a large-bodied (track length 15 cm) and bipedal member of the dinosaur lineage. Credit: Grzegorz Niedźwiedzki

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