University Science Bulletin. 1912, 6 (2): 232–259. Robert L. Carroll and DonaldBaird. Carboniferous Stem-Reptiles of the Family Romeriidae. Bulletin of the
University Science Bulletin. 1912, 6 (2): 232–259. Robert L. Carroll and DonaldBaird. Carboniferous Stem-Reptiles of the Family Romeriidae. Bulletin of the
Publications International, LTD. p. 112-113 Carpenter, Ken & Russell, Dale A, DonaldBaird, and R. Denton. Redescription of the holotype of Dryptosaurus aquilunguis