Shimada, K., . 2007. Mesozoic origin for megamouth shark (Lamniformes: Megachasmidae). Journal of Vertebrate Paleontology, 27:512-516
Shimada, K., Schumacher, B.A., Parkin, J.A., & Palermo, J.M.. 2006. Fossil marine vertebrates from the lowermost Greenhorn Limestone (Upper Cretaceous: middle Cenomanian) in southeastern Colorado. Journal of Paleontology Memoir, 63:1-45