USNM:PAL
Sowerbyella eximia Cooper
USNM PAL117492P Cooper & Loeblich
United States, Virginia
USNM:PAL
Sowerbyella lebanonensis Bassler
USNM PAL117497C R. Bassler
United States, Tennessee, Giles County
USNM:PAL
Sowerbyella nasuta Cooper
USNM PAL117503G G. Cooper
United States, Virginia
USNM:PAL
Sowerbyella socialis Cooper
USNM PAL117525A G. Cooper
United States, Virginia
USNM:PAL
Sowerbyella perplexa Cooper
USNM PAL117508D G. Cooper
United States, Virginia
USNM:PAL
Sowerbyella negritus (Willard)
USNM PAL117504B Bridge, Butts & Cooper
United States, Virginia
USNM:PAL
Sowerbyella lebanonensis Bassler
USNM PAL80497C
USNM:PAL
Sowerbyella variabilis Cooper
USNM PAL117539A A. Loeblich
United States, Oklahoma, Murray County
USNM:PAL
Sowerbyella perplexa Cooper
USNM PAL146507
United States, Nevada
USNM:PAL
Sowerbyella cava Cooper
USNM PAL97542B
USNM:PAL
Sowerbyella sp 1 Cooper
USNM PAL117544B G. Cooper
United States, Oklahoma, Murray County
USNM:PAL
Sowerbyella lebanonensis Bassler
USNM PAL117497A R. Bassler
United States, Tennessee, Giles County
USNM:PAL
Sowerbyella monilifera Cooper
USNM PAL117499B Bridge
United States, Wisconsin
USNM:PAL
Sowerbyella varicostellata Cooper
USNM PAL117532C R. Mesler
United States, Tennessee, Blount County
USNM:PAL
Plectodonta (Eoplectodonta) sp b Boucot & Johnson
USNM PAL164818 H. Arnold
Venezuela, Barinas, Pedraza District
USNM:PAL
Sowerbyella indistincta Cooper
USNM PAL117493B A. Loeblich
United States, Oklahoma, Carter County
USNM:PAL
Ptychoglyptus kindlei Cooper
USNM PAL117392A Kindle
Canada, Newfoundland
USNM:PAL
Sowerbyella monilifera Cooper
USNM PAL117500I Cole
United States, Minnesota, Goodhue County
USNM:PAL
Sowerbyella sp 2 Cooper
USNM PAL117545C C. Butts
United States, Pennsylvania
USNM:PAL
Ptychoglyptus virginiensis Willard
USNM PAL111052 G. Cooper
United States, Virginia
USNM:PAL
Anisopleurella inaequistriata Cooper
USNM PAL110924 G. Cooper
United States, Virginia, Bland County
USNM:PAL
Sowerbyella silicica Cooper
USNM PAL98213B
USNM:PAL
Sowerbyella vulgata Cooper
USNM PAL117543 A. Loeblich
United States, Oklahoma, Murray County
USNM:PAL
Plectodonta Boucot & Thompson
USNM PAL140041
USNM:PAL
Sowerbyella cava Cooper
USNM PAL123258C Cooper & Loeblich
United States, Virginia
USNM:PAL
Sowerbyella negritus (Willard)
USNM PAL117504C Bridge, Butts & Cooper
United States, Virginia
USNM:PAL
Anisopleurella Neuman
USNM PAL465192
United States, Maine, Aroostook County
USNM:PAL
Sowerbyella punctostriata (Mather)
USNM PAL117515A G. Cooper
United States, Missouri
USNM:PAL
Sowerbyella eximia Cooper
USNM PAL117492N Cooper & Loeblich
United States, Virginia
USNM:PAL
Sowerbyella bellarugosa Ulrich & Cooper
USNM PAL92867A E. Kirk
United States, Nevada
USNM:PAL
Sowerbyella compacta Cooper
USNM PAL117485A G. Cooper
United States, Tennessee
USNM:PAL
Sowerbyella variabilis Cooper
USNM PAL117535C A. Loeblich
United States, Oklahoma, Carter County
USNM:PAL
Sowerbyella Butts
USNM PAL97542 C. Butts
United States, Virginia, Shenandoah County
USNM:PAL
Sowerbyella sp 4 Cooper
USNM PAL117547 G. Cooper
United States, Nevada
USNM:PAL
Sowerbyella rugosa (Meek)
USNM PAL97581A C. Butts
United States, Virginia, Roanoke County
USNM:PAL
Sowerbyella cava Cooper
USNM PAL117480 Cooper & Loeblich
United States, Virginia
USNM:PAL
Sowerbyella Butts
USNM PAL97543B C. Butts
United States, Virginia, Shenandoah County
USNM:PAL
Plectodonta (Eoplectodonta) sp b Boucot & Johnson
USNM PAL164814 H. Arnold
Venezuela, Barinas, Pedraza District
USNM:PAL
Sowerbyella socialis Cooper
USNM PAL117527C G. Cooper
United States, Virginia
USNM:PAL
Sowerbyella cava Cooper
USNM PAL117481F Cooper & Loeblich
United States, Virginia
USNM:PAL
Sowerbyella silicica Cooper
USNM PAL117517B Bridge & Cooper
United States, Virginia
USNM:PAL
Sowerbyella bellarugosa Ulrich & Cooper
USNM PAL92867 E. Kirk
United States, Nevada
USNM:PAL
Ptychoglyptus virginiensis Willard
USNM PAL111052 Cooper & Cooper
United States, Virginia, Shenandoah County
USNM:PAL
Anisopleurella inaequistriata Cooper
USNM PAL110929C E. Ulrich
United States, Tennessee
USNM:PAL
Sowerbyella socialis Cooper
USNM PAL98206A
USNM:PAL
Sowerbyella subcarinata (Ulrich)
USNM PAL71525E
USNM:PAL
Ptychoglyptus kindlei Cooper
USNM PAL66290B G. Cooper
Canada, Quebec, Stanbridge Twp
USNM:PAL
Sowerbyella angulata Cooper
USNM PAL71538B
USNM:PAL
Sowerbyella perplexa Cooper
USNM PAL145713
United States, Nevada
USNM:PAL
Plectodonta Boucot & Thompson
USNM PAL140045
USNM:PAL
Sowerbyella punctostriata (Mather)
USNM PAL117513A G. Cooper
United States, Missouri, Ralls County
USNM:PAL
Anisopleurella tricostellata Cooper
USNM PAL110925D G. Cooper
United States, Alabama, Bibb County
USNM:PAL
Ptychoglyptus virginiensis Willard
USNM PAL98231BB
USNM:PAL
Plectodonta (Eoplectodonta) sp a Boucot & Johnson
USNM PAL164819 R. Shagam 1962-00-00
Venezuela, Barinas, Pedraza District
USNM:PAL
Sowerbyella aequicostellata Cooper
USNM PAL117477D R. Mesler
United States, Virginia
USNM:PAL
Sowerbyella prolangata Foerste
USNM PAL84827
USNM:PAL
Sowerbyella aequistriata (Willard)
USNM PAL117478 G. Cooper
United States, Tennessee
USNM:PAL
Anisopleurella tricostellata Cooper
USNM PAL110925A G. Cooper
United States, Alabama, Bibb County
USNM:PAL
Sowerbyella Butts
USNM PAL97543A C. Butts
United States, Virginia, Shenandoah County
USNM:PAL
Sowerbyella aequicostellata Cooper
USNM PAL117477A R. Mesler
United States, Virginia
USNM:PAL
Sowerbyella Butts
USNM PAL98213C C. Butts
United States, Virginia, Smyth County
USNM:PAL
Plectodonta Boucot & Thompson
USNM PAL140044
USNM:PAL
Sowerbyella alternata Butts
USNM PAL97544A C. Butts
United States, Virginia, Shenandoah County
USNM:PAL
Sowerbyella parva Cooper
USNM PAL117507C G. Cooper
United States, Virginia
USNM:PAL
Sowerbyella varicostellata Cooper
USNM PAL117532E R. Mesler
United States, Tennessee, Blount County
USNM:PAL
Ptychoglyptus kindlei Cooper
USNM PAL66290C G. Cooper
Canada, Quebec, Stanbridge Twp
USNM:PAL
Anisopleurella tricostellata Cooper
USNM PAL117475C G. Cooper
United States, Alabama, Bibb County
USNM:PAL
Sowerbyella vulgata Cooper
USNM PAL117541 A. Loeblich
United States, Oklahoma, Murray County
USNM:PAL
Sowerbyella nasuta Cooper
USNM PAL117502A G. Cooper
United States, Virginia
USNM:PAL
Ptychoglyptus matura Cooper
USNM PAL111061 G. Cooper
United States, Alabama, Bibb County
USNM:PAL
Sowerbyella pisum (Ruedemann)
USNM PAL97540A C. Butts
United States, Virginia, Shenandoah County
USNM:PAL
Sowerbyella monilifera Cooper
USNM PAL117500C Cole
United States, Minnesota, Goodhue County
USNM:PAL
Sowerbyella punctostriata (Mather)
USNM PAL117515B G. Cooper
United States, Missouri
USNM:PAL
Plectodonta Boucot & Thompson
USNM PAL140046
USNM:PAL
Sowerbyella vulgata Cooper
USNM PAL117543A A. Loeblich
United States, Oklahoma, Murray County
USNM:PAL
Anisopleurella tricostellata Cooper
USNM PAL117475A G. Cooper
United States, Alabama, Bibb County
USNM:PAL
Sowerbyella variabilis Cooper
USNM PAL117535B A. Loeblich
United States, Oklahoma, Carter County
USNM:PAL
Sowerbyella socialis crassa Cooper
USNM PAL117529B G. Cooper
United States, Tennessee
USNM:PAL
Sowerbyella compacta Cooper
USNM PAL117486B Cooper & Loeblich
United States, Virginia
USNM:PAL
Sowerbyella punctostriata (Mather)
USNM PAL117514B Bridge & Cooper
United States, Missouri
USNM:PAL
Sowerbyella rugosa var. triradiatus (Meek)
USNM PAL97582A C. Butts
United States, Virginia, Shenandoah County
USNM:PAL
Sowerbyella compacta Cooper
USNM PAL117484D Cooper & Loeblich
United States, Tennessee
USNM:PAL
Ptychoglyptus virginiensis Willard
USNM PAL123285D G. Cooper
United States, Alabama, Bibb County
USNM:PAL
Sowerbyella perplexa Cooper
USNM PAL117508B G. Cooper
United States, Virginia
USNM:PAL
Sowerbyella lebanonensis Bassler
USNM PAL117494A A. Loeblich
United States, Tennessee, Rutherford County
USNM:PAL
Sowerbyella plicatifera Cooper
USNM PAL117510 A. Loeblich
United States, Oklahoma, Carter County
USNM:PAL
Plectodonta (Eoplectodonta) sp b Boucot & Johnson
USNM PAL164815 H. Arnold
Venezuela, Barinas, Pedraza District
USNM:PAL
Sowerbyella curdsvillensis (Foerste)
USNM PAL117491 G. Cooper
United States, Tennessee
USNM:PAL
Sowerbyella socialis Cooper
USNM PAL117525C G. Cooper
United States, Virginia
USNM:PAL
Sowerbyella vulgata Cooper
USNM PAL117543B A. Loeblich
United States, Oklahoma, Murray County
USNM:PAL
Sowerbyella varicostellata Cooper
USNM PAL117532D R. Mesler
United States, Tennessee, Blount County
USNM:PAL
Sowerbyella vulgata Cooper
USNM PAL117542B A. Loeblich
United States, Oklahoma, Carter County
USNM:PAL
Anisopleurella tricostellata Cooper
USNM PAL110925C G. Cooper
United States, Alabama, Bibb County
USNM:PAL
Sowerbyella sp 4 Cooper
USNM PAL117548A G. Cooper
United States, Nevada
USNM:PAL
Sowerbyella subcarinata (Ulrich)
USNM PAL117534B G. Cooper
United States, Alabama
USNM:PAL
Sowerbyella Butts
USNM PAL98207D R. Mesler
United States, Virginia, Scott County
USNM:PAL
Sowerbyella eximia Cooper
USNM PAL117492A Cooper & Loeblich
United States, Virginia
USNM:PAL
Ptychoglyptus virginiensis Willard
USNM PAL123285F G. Cooper
United States, Alabama, Bibb County
USNM:PAL
Plectodonta Boucot & Thompson
USNM PAL140038
USNM:PAL
Sowerbyella aequicostellata Cooper
USNM PAL117477E R. Mesler
United States, Virginia