Gutschick, Weiner&Young, Oxinoxisidae Mississippian Lower Mississippian Midwestern USA Hannibal FM James E. and Barbara M. Conkin identified by scientist 1 / FEU-1004782 | ![]() | Gutschick, Weiner&Young, Oxinoxisidae Mississippian Lower Mississippian Midwestern USA Hannibal FM James E. and Barbara M. Conkin identified by scientist 2 / FEU-1004783 | ![]() | Gutschick, Weiner&Young, Oxinoxisidae Mississippian Lower Mississippian Midwestern USA Chouteau Group James E. and Barbara M. Conkin identified by scientist 3 / FEU-1005036 | ![]() | Conkin&Conkin&Canis, 1968 Oxinoxisidae Mississippian Lower Mississippian Midwestern USA Chouteau Group James E. and Barbara M. Conkin type specimen holotype 4 / FEU-1005037 | ![]() |