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Ezcurra, M. D. and Sues, H. 2021. A re-assessment of the osteology and phylogenetic relationships of the enigmatic, large-headed reptile Sphodrosaurus pennsylvanicus (Late Triassic, Pennsylvania, USA) indicates archosauriform affinities. Journal of Systematic Palaeontology. Vol. 19(24), pp. 1643-1677.