(Melnikova, 1977) Pseudostaffellidae Pennsylvanian Eastern European Plain unknown Loeblich and Tappan identified by scientist 1 / FEU-1014579 | Liem, 1966 Pseudostaffellidae Pennsylvanian unknown Loeblich and Tappan identified by scientist 2 / FEU-1014581 | Reitlinger, 1961 Pseudostaffellidae Pennsylvanian unknown Loeblich and Tappan identified by scientist 3 / FEU-1014584 | (Dutkevich, 1934) Pseudostaffellidae Pennsylvanian Ural Mountains unknown Loeblich and Tappan identified by scientist 4 / FEU-1014616 | Lin, 1977 Pseudostaffellidae Lower Permian unknown Loeblich and Tappan identified by scientist 5 / FEU-1014786 | |||||
(Ehrenberg, 1854) Pseudostaffellidae Pennsylvanian Eastern European Plain unknown Loeblich and Tappan identified by scientist 6 / FEU-1014791 | (Ehrenberg, 1854) Pseudostaffellidae unknown type specimen holotype 7 / FEU-1022538 |