Shimada, K. & Martin, D.J. (2008)
Fossil fishes from the basal Greenhorn Limestone (Upper Cretaceous: late Cenomanian) in Russell County, Kansas. Fort Hays Studies, (Special Issue 2), 89–103

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, 80(sp63), 1–45
DOI: 10.1666/0022-3360(2006)80[1:FMVFTL]2.0.CO;2

Parkin, J.A. & Palermo, J.M. & Shimada, K. & Schumacher, B.A. (2002)
Fossil fishes from the lowermost Greenhorn Limestone (Upper Cretaceous: Middle Cenomanian) in southeastern Colorado [Abstract]. Geological Society of America Abstracts with Programs

Cicimurri, D.J. (2001)
Cretaceous elasmobranchs of the Greenhorn Formation (Middle Cenomanian-Middle Turonian), western South Dakota Proceedings of the 6th Fossil Resource Conference: National Park Service Geological Resource Division Technical Report NPS/NRGRD/ GRDTR01/01. p. 27–43 in V. L. Santucci and L. McClelland(eds.),

Cicimurri, D.J. (2001)
Fossil selachians from the Belle Fourche Shale (Cretaceous, Cenomanian), Black Hills region of South Dakota and Wyoming. Mountain Geologist, 38(4), 181–192

Welton, B.J. & Farish, R.F. (1993)
The collector's guide to fossil sharks and rays from the Cretaceous of Texas. Before Time, Lewisville, 1993