Brownstein, C. D. (2018) “Rebuttal of McFeeters, Ryan and Cullen, 2018, ‘Positional variation in pedal unguals of North American ornithomimids (Dinosauria, Theropoda): A Response to Brownstein (2017)’”, Vertebrate Anatomy Morphology Palaeontology, 6, pp. 68–72. doi: 10.18435/vamp29340.