(Vdovenko, 1971) Eostaffellidae Pennsylvanian Eastern European Plain unknown Loeblich and Tappan identified by scientist 1 / FEU-1014577 | (Reitlinger, 1971) Eostaffellidae Pennsylvanian Ural Mountains unknown Loeblich and Tappan identified by scientist 2 / FEU-1014585 | (Rauzer-Chernousova, 1948 Eostaffellidae Pennsylvanian Eastern European Plain unknown Loeblich and Tappan identified by scientist 3 / FEU-1014787 | (Rauzer-Chernousova, 1948 Eostaffellidae Mississippian unknown Loeblich and Tappan identified by scientist 4 / FEU-1014788 | (Vdovenko, 1954) Eostaffellidae Mississippian Eastern European Plain unknown Loeblich and Tappan identified by scientist 5 / FEU-1014796 | |||||