An undated image of Afrodelatorrichnus ellenbergeri, a set of hand-feet

An undated image of Afrodelatorrichnus ellenbergeri, a set of hand-feet impressions of a quadrupedal dinosaur, are seen preserved in a sandstone layer in South Africa alongside an interpretive outline of the tracks, in a combination of photos released January 29, 2020. Bordy et al. 2020 PLoS One/Handout via REUTERS