 identified by M. Hesemann Carboniferous Mississippian American South Spergen Hill |
 identified by M. Hesemann Carboniferous Mississippian American South Spergen Hill |
 identified by M. Hesemann Carboniferous Mississippian American South Spergen Hill |
 identified by M. Hesemann Carboniferous Mississippian American South Spergen Hill |
 identified by M. Hesemann Carboniferous Mississippian American South Spergen Hill |