McFeeters, Bradley, Michael J. Ryan, and Thomas M. Cullen. 2018. “Positional Variation in Pedal Ungulas of North American Ornithomimids (Dinosauria, Theropoda): A Response to Brownstein (2017)”. Vertebrate Anatomy Morphology Palaeontology 5 (May). https://doi.org/10.18435/vamp29283.