Cicimurri, D. & Ciampaglio, C. & Hoenig, M. & Shell, R. & Fuelling, L. & Peterman, D. & Cline, D.A. & Jacquemin, S.A. (2024)
A Description of the New Hybodont Shark Genus, Columnaodus, from the Burlington and Keokuk Limestones (Carboniferous, Mississippian, Osagean) of Illinois and Iowa, USA. Diversity, 16(5), Article 276
DOI: 10.3390/d16050276

Gieser, R. & Shell, R. & Thomas, M.J. & Davis, M. (2023)
First records of the chondrichthyans Heslerodus and Ossianodus from the Upper Pennsylvanian LaSalle Limestone (Bond Formation) of northern Illinois. Kentiana, 5, Article 1439
DOI: 10.21900/j.kentiana.n.1439

Amadori, M. & Solonin, S.V. & Vodorezov, A.V. & Shell, R. & Niedzwiedzki, R. & Kriwet, J. (2022)
The extinct shark, Ptychodus (Elasmobranchii, Ptychodontidae) in the Upper Cretaceous of central-western Russia. - The road to easternmost peri-Tethyan seas. Journal of Vertebrate Paleontology, 42(2), Article e2162909
DOI: 10.1080/02724634.2022.2162909