Case, G.R. (1970)
A fossil shark in Nebraska. Underwater Naturalist(American Littoral Society), 6(4): 29–30, 1 fig.
Case, G.R. (1975)
L'evoluzione del pescecane. 2. Riguarda importanti forme di pesci simili al pesecane del Carbonifero; ed una discussione sui nuovi pesci: iniopterygian (un Nuova di chondrichthyans) [The evolution of fish. 2. Important records of fish forms of similar Carboniferous fish, and a discussion of new fish: iniopterygians (new chondrichthyans)]. Notizario del Gruppo Mineralogico Florentino(Florence, Italy), 2(4): 18–22
Lund, R. (1990)
Chondrichthyan life history styles as revealed by the 320 million years old Mississippian of Montana. Environmental Biology of Fishes, 27(1), 1–19
DOI: 10.1007/BF00004900
Ivanov, A.O. & Lucas, S.G. (2019)
Late Pennsylvanian fish assemblage from the Robledo Mountains and new records of Paleozoic chondrichthyans in New Mexico, USA. Bulletin of Geosciences, 94(2): 235-255
DOI: 10.3140/bull.geosci.1741