USNM:PAL
Sowerbyella vulgata Cooper
USNM PAL117543F A. Loeblich
United States, Oklahoma, Murray County
USNM:PAL
Sowerbyella aequistriata (Willard)
USNM PAL117478G G. Cooper
United States, Tennessee
USNM:PAL
Sowerbyella monilifera Cooper
USNM PAL117500G Cole
United States, Minnesota, Goodhue County
USNM:PAL
Sowerbyella eximia Cooper
USNM PAL117492F Cooper & Loeblich
United States, Virginia
USNM:PAL
Ptychoglyptus virginiensis Willard
USNM PAL117398C G. Cooper
United States, Alabama, Bibb County
USNM:PAL
Sowerbyella nasuta Cooper
USNM PAL117503A G. Cooper
United States, Virginia
USNM:PAL
Sowerbyella subcarinata (Ulrich)
USNM PAL71525B
USNM:PAL
Sowerbyella Butts
USNM PAL97583 C. Butts
United States, Virginia, Rockbridge County
USNM:PAL
Sowerbyella curdsvillensis (Foerste)
USNM PAL208580
United States, Kentucky
USNM:PAL
Sowerbyella subcarinata (Ulrich)
USNM PAL71525D
USNM:PAL
Sowerbyella socialis Cooper
USNM PAL117524B G. Cooper
United States, Virginia
USNM:PAL
Sowerbyella curdsvillensis (Foerste)
USNM PAL208582
United States, Kentucky
USNM:PAL
Sowerbyella curdsvillensis (Foerste)
USNM PAL117491E G. Cooper
United States, Tennessee
USNM:PAL
Sowerbyella compacta Cooper
USNM PAL117482 E. Ulrich
United States, Tennessee, James County
USNM:PAL
Sowerbyella varicostellata Cooper
USNM PAL117532B R. Mesler
United States, Tennessee, Blount County
USNM:PAL
Sowerbyella socialis Cooper
USNM PAL98206B
USNM:PAL
Sowerbyella vulgata Cooper
USNM PAL117540A A. Loeblich
United States, Oklahoma, Murray County
USNM:PAL
Sowerbyella cava Cooper
USNM PAL97542A
USNM:PAL
Ptychoglyptus virginiensis Willard
USNM PAL117397 Cooper & Cooper
United States, Tennessee
USNM:PAL
Sowerbyella negritus (Willard)
USNM PAL117504A Bridge, Butts & Cooper
United States, Virginia
USNM:PAL
Sowerbyella varicostellata Cooper
USNM PAL123256 R. Mesler
United States, Tennessee, Blount County
USNM:PAL
Sowerbyella eximia Cooper
USNM PAL117492C Cooper & Loeblich
United States, Virginia
USNM:PAL
Sowerbyella variabilis Cooper
USNM PAL117536A Loeblich Et Al
United States, Oklahoma, Carter County
USNM:PAL
Sowerbyella varicostellata Cooper
USNM PAL117532A R. Mesler
United States, Tennessee, Blount County
USNM:PAL
Ptychoglyptus virginiensis Willard
USNM PAL98231A
USNM:PAL
Sowerbyella silicica Cooper
USNM PAL98213C
USNM:PAL
Sowerbyella compacta Cooper
USNM PAL117487 G. Cooper
United States, Virginia
USNM:PAL
Sowerbyella socialis Cooper
USNM PAL117527A G. Cooper
United States, Virginia
USNM:PAL
Sowerbyella indistincta Cooper
USNM PAL117493C A. Loeblich
United States, Oklahoma, Carter County
USNM:PAL
Sowerbyella silicica nana Cooper
USNM PAL98229B
USNM:PAL
Ptychoglyptus virginiensis Willard
USNM PAL117398F G. Cooper
United States, Alabama, Bibb County
USNM:PAL
Sowerbyella lebanonensis Bassler
USNM PAL117494C A. Loeblich
United States, Tennessee, Rutherford County
USNM:PAL
Sowerbyella socialis Cooper
USNM PAL98207E
USNM:PAL
Sowerbyella cava Cooper
USNM PAL117480A Cooper & Loeblich
United States, Virginia
USNM:PAL
Plectodonta (Eoplectodonta) sp b Boucot & Johnson
USNM PAL164816 H. Arnold
Venezuela, Barinas, Pedraza District
USNM:PAL
Sowerbyella nasuta Cooper
USNM PAL117503E G. Cooper
United States, Virginia
USNM:PAL
Sowerbyella perplexa Cooper
USNM PAL117509B G. Cooper
United States, Virginia, Bland County
USNM:PAL
Sowerbyella Howe
USNM PAL208604
United States, Kentucky
USNM:PAL
Ptychoglyptus virginiensis Willard
USNM PAL111057
USNM:PAL
Sowerbyella aequicostellata Cooper
USNM PAL117476A G. Cooper
United States, Pennsylvania
USNM:PAL
Sowerbyella bellarugosa Ulrich & Cooper
USNM PAL92867E E. Kirk
United States, Nevada
USNM:PAL
Sowerbyella negritus (Willard)
USNM PAL117505D Bridge & Cooper
United States, Virginia
USNM:PAL
Sowerbyella negritus (Willard)
USNM PAL98228A
USNM:PAL
Sowerbyella monilifera Cooper
USNM PAL117500A Cole
United States, Minnesota, Goodhue County
USNM:PAL
Sowerbyella Butts
USNM PAL98229B C. Butts
United States, Virginia
USNM:PAL
Sowerbyella eximia Cooper
USNM PAL117492K Cooper & Loeblich
United States, Virginia
USNM:PAL
Sowerbyella nasuta Cooper
USNM PAL117503D G. Cooper
United States, Virginia
USNM:PAL
Anisopleurella tricostellata Cooper
USNM PAL110925B G. Cooper
United States, Alabama, Bibb County
USNM:PAL
Sowerbyella rugosa var. triradiatus (Meek)
USNM PAL97582B C. Butts
United States, Virginia, Shenandoah County
USNM:PAL
Sowerbyella indistincta Cooper
USNM PAL117493A A. Loeblich
United States, Oklahoma, Carter County
USNM:PAL
Sowerbyella compacta Cooper
USNM PAL117486C Cooper & Loeblich
United States, Virginia
USNM:PAL
Sowerbyella Butts
USNM PAL98228B C. Butts
United States, Virginia, Rockbridge County
USNM:PAL
Sowerbyella eximia Cooper
USNM PAL117492G Cooper & Loeblich
United States, Virginia
USNM:PAL
Sowerbyella parva Cooper
USNM PAL117507B G. Cooper
United States, Virginia
USNM:PAL
Sowerbyella Butts
USNM PAL97542B C. Butts
United States, Virginia, Shenandoah County
USNM:PAL
Sowerbyella Howe
USNM PAL208602
United States, Kentucky
USNM:PAL
Sowerbyella grierensis Howe
USNM PAL208593
United States, Kentucky
USNM:PAL
Ptychoglyptus virginiensis Willard
USNM PAL123285E G. Cooper
United States, Alabama, Bibb County
USNM:PAL
Sowerbyella Howe
USNM PAL208605
United States, Kentucky
USNM:PAL
Sowerbyella socialis Cooper
USNM PAL98207B
USNM:PAL
Sowerbyella compacta Cooper
USNM PAL117486A Cooper & Loeblich
United States, Virginia
USNM:PAL
Sowerbyella punctostriata (Mather)
USNM PAL117513B G. Cooper
United States, Missouri, Ralls County
USNM:PAL
Ptychoglyptus virginiensis Willard
USNM PAL98231AA
USNM:PAL
Sowerbyella compacta Cooper
USNM PAL117484C Cooper & Loeblich
United States, Tennessee
USNM:PAL
Sowerbyella socialis crassa Cooper
USNM PAL117528B G. Cooper
United States, Virginia
USNM:PAL
Sowerbyella perplexa Cooper
USNM PAL145712
United States, Nevada
USNM:PAL
Sowerbyella Butts
USNM PAL97542A C. Butts
United States, Virginia, Shenandoah County
USNM:PAL
Sowerbyella Butts
USNM PAL98207A R. Mesler
United States, Virginia, Scott County
USNM:PAL
Sowerbyella alternata Butts
USNM PAL97544B C. Butts
United States, Virginia, Shenandoah County
USNM:PAL
Sowerbyella socialis Cooper
USNM PAL98206D
USNM:PAL
Sowerbyella subcarinata (Ulrich)
USNM PAL71525G
USNM:PAL
Sowerbyella socialis Cooper
USNM PAL117526B G. Cooper
United States, Virginia
USNM:PAL
Sowerbyella Butts
USNM PAL98229A C. Butts
United States, Virginia
USNM:PAL
Sowerbyella silicica Cooper
USNM PAL117517A Bridge & Cooper
United States, Virginia
USNM:PAL
Sowerbyella Howe
USNM PAL208607
United States, Kentucky
USNM:PAL
Ptychoglyptus virginiensis Willard
USNM PAL71475
USNM:PAL
Sowerbyella Howe
USNM PAL208603
United States, Kentucky
USNM:PAL
Ptychoglyptus virginiensis Willard
USNM PAL123285B G. Cooper
United States, Alabama, Bibb County
USNM:PAL
Sowerbyella curdsvillensis (Foerste)
USNM PAL208584
United States, Kentucky
USNM:PAL
Sowerbyella grierensis Howe
USNM PAL208589
United States, Kentucky
USNM:PAL
Plectodonta (Eoplectodonta) sp b Boucot & Johnson
USNM PAL164817 H. Arnold
Venezuela, Barinas, Pedraza District
USNM:PAL
Sowerbyella subcarinata (Ulrich)
USNM PAL117534C G. Cooper
United States, Alabama
USNM:PAL
Sowerbyella subcarinata (Ulrich)
USNM PAL117531
USNM:PAL
Sowerbyella silicica nana Cooper
USNM PAL98229A
USNM:PAL
Sowerbyella Howe
USNM PAL208600
United States, Kentucky
USNM:PAL
Sowerbyella compacta Cooper
USNM PAL117485B G. Cooper
United States, Tennessee
USNM:PAL
Sowerbyella nasuta Cooper
USNM PAL117503C G. Cooper
United States, Virginia
USNM:PAL
Ptychoglyptus kindlei Cooper
USNM PAL123254B Kindle
Canada, Newfoundland
USNM:PAL
Sowerbyella nasuta Cooper
USNM PAL117502B G. Cooper
United States, Virginia
USNM:PAL
Sowerbyella pisum (Ruedemann)
USNM PAL97540B C. Butts
United States, Virginia, Shenandoah County
USNM:PAL
Sowerbyella rugosa (Meek)
USNM PAL170730
USNM:PAL
Plectodonta Boucot & Thompson
USNM PAL140039A