USNM:PAL
Pleurorthis fascicostellata Cooper
USNM PAL116841B G. Cooper
Canada, Quebec, Stanbridge Twp
USNM:PAL
Nothorthis tarda Cooper
USNM PAL116851D G. Cooper
United States, Alabama, Bibb County
USNM:PAL
Pleurorthis beattyensis Ross
USNM PAL167181C Ross 1966-00-00
United States, Nevada
USNM:PAL
Pleurorthis fascicostellata Cooper
USNM PAL117982 G. Cooper
Canada, Quebec, Stanbridge Twp
USNM:PAL
Pleurorthis fascicostellata Cooper
USNM PAL116841D G. Cooper
Canada, Quebec, Stanbridge Twp
USNM:PAL
Nothorthis transversa Cooper
USNM PAL117985B G. Cooper
United States, Alabama, Bibb County
USNM:PAL
Nothorthis tarda Cooper
USNM PAL116851H G. Cooper
United States, Alabama, Bibb County
USNM:PAL
Nothorthis tarda Cooper
USNM PAL116851G G. Cooper
United States, Alabama, Bibb County
USNM:PAL
Pleurorthis imbecilis (Billings)
USNM PAL116842A Kindle
Canada, Newfoundland
USNM:PAL
Nothorthis tarda Cooper
USNM PAL116851A G. Cooper
United States, Alabama, Bibb County
USNM:PAL
Pleurorthis convexa Cooper
USNM PAL116844C G. Cooper
Canada, Quebec, Stanbridge Twp
USNM:PAL
Pleurorthis costellata Cooper
USNM PAL116845C G. Cooper
Canada, Quebec, Stanbridge Twp
USNM:PAL
Nothorthis pennsylvanica Ulrich & Cooper
USNM PAL92845 E. Ulrich
United States, Pennsylvania
USNM:PAL
Pleurorthis fascicostellata Cooper
USNM PAL116841I G. Cooper
Canada, Quebec, Stanbridge Twp
USNM:PAL
Pleurorthis convexa Cooper
USNM PAL116844D G. Cooper
Canada, Quebec, Stanbridge Twp
USNM:PAL
Pleurorthis beattyensis Ross
USNM PAL167180 Ross 1966-00-00
United States, Nevada
USNM:PAL
Nothorthis transversa Cooper
USNM PAL117986 G. Cooper
United States, Alabama, Bibb County
USNM:PAL
Nothorthis pennsylvanica Ulrich & Cooper
USNM PAL92845B E. Ulrich
United States, Pennsylvania
USNM:PAL
Pleurorthis convexa Cooper
USNM PAL116844B G. Cooper
Canada, Quebec, Stanbridge Twp
USNM:PAL
Nothorthis pennsylvanica Ulrich & Cooper
USNM PAL92845G E. Ulrich
United States, Pennsylvania
USNM:PAL
Nothorthis tarda Cooper
USNM PAL116851F G. Cooper
United States, Alabama, Bibb County
USNM:PAL
Pleurorthis costellata Cooper
USNM PAL116845 G. Cooper
Canada, Quebec, Stanbridge Twp
USNM:PAL
Pleurorthis convexa Cooper
USNM PAL116844E G. Cooper
Canada, Quebec, Stanbridge Twp
USNM:PAL
Pleurorthis convexa Cooper
USNM PAL116844A G. Cooper
Canada, Quebec, Stanbridge Twp
USNM:PAL
Nothorthis transversa Cooper
USNM PAL117985A G. Cooper
United States, Alabama, Bibb County
USNM:PAL
Pleurorthis costellata Cooper
USNM PAL116845B G. Cooper
Canada, Quebec, Stanbridge Twp
USNM:PAL
Pleurorthis beattyensis Ross
USNM PAL167181A Ross 1966-00-00
United States, Nevada
USNM:PAL
Pleurorthis corinna (Billings)
USNM PAL66307 G. Cooper
Canada, Quebec, Stanbridge Twp
USNM:PAL
Pleurorthis sp 1 Cooper
USNM PAL116846 Kindle
Canada, Newfoundland
USNM:PAL
Nothorthis tarda Cooper
USNM PAL116851B G. Cooper
United States, Alabama, Bibb County
USNM:PAL
Nothorthis tarda Cooper
USNM PAL116851E G. Cooper
United States, Alabama, Bibb County
USNM:PAL
Pleurorthis Ross
USNM PAL167182 Ross 1966-00-00
United States, Nevada
USNM:PAL
Nothorthis tarda Cooper
USNM PAL116851J G. Cooper
United States, Alabama, Bibb County
USNM:PAL
Nothorthis transversa Cooper
USNM PAL117985C G. Cooper
United States, Alabama, Bibb County
USNM:PAL
Nothorthis transversa Cooper
USNM PAL117985E G. Cooper
United States, Alabama, Bibb County
USNM:PAL
Pleurorthis fascicostellata Cooper
USNM PAL116841C G. Cooper
Canada, Quebec, Stanbridge Twp
USNM:PAL
Pleurorthis imbecilis (Billings)
USNM PAL116842B Kindle
Canada, Newfoundland
USNM:PAL
Nothorthis tarda Cooper
USNM PAL116851I G. Cooper
United States, Alabama, Bibb County
USNM:PAL
Pleurorthis sp 1 Cooper
USNM PAL116847 Kindle
Canada, Newfoundland
USNM:PAL
Pleurorthis beattyensis Ross
USNM PAL167181B Ross 1966-00-00
United States, Nevada
USNM:PAL
Pleurorthis fascicostellata Cooper
USNM PAL116841 G. Cooper
Canada, Quebec, Stanbridge Twp
USNM:PAL
Nothorthis transversa Cooper
USNM PAL117985D G. Cooper
United States, Alabama, Bibb County
USNM:PAL
Pleurorthis fascicostellata Cooper
USNM PAL116841G G. Cooper
Canada, Quebec, Stanbridge Twp
USNM:PAL
Pleurorthis imbecilis (Billings)
USNM PAL116843 Kindle
Canada, Newfoundland
USNM:PAL
Nothorthis tarda Cooper
USNM PAL116851C G. Cooper
United States, Alabama, Bibb County
USNM:PAL
Nothorthis pennsylvanica Ulrich & Cooper
USNM PAL92845H E. Ulrich
United States, Pennsylvania
USNM:PAL
Pleurorthis sp 2 Cooper
USNM PAL116848 Kindle
Canada, Newfoundland