USNM:PAL
Acrotreta idahoensis Walcott
USNM PAL52089D C. Walcott
United States, South Dakota, Lawrence County
USNM:PAL
Acrotreta pacifica Walcott
USNM PAL52510 Blackwelder
China, Shantung
USNM:PAL
Acrotreta pileata Resser & Endo
USNM PAL86697E R. Endo
China, Manchoukuo Prov
USNM:PAL
Acrotreta inflata (Matthew)
USNM PAL35276D
USNM:PAL
Eurytreta fillmorensis Holmer et al.
USNM PAL526150
United States, Utah, Millard County
USNM:PAL
Eurytreta fillmorensis Holmer et al.
USNM PAL526139
United States, Utah, Millard County
USNM:PAL
Acrotreta attenuata Meek
USNM PAL52067A
USNM:PAL
Angulotreta triangularis Palmer
USNM PAL208285
United States, Texas
USNM:PAL
Linnarssonella modesta Walcott
USNM PAL52197F Walcott, Weeks & Burling
United States, Utah, Millard County
USNM:PAL
Acrothyra proavia (Matthew)
USNM PAL52052K S. Loper 1901-00-00
Canada, Nova Scotia, Cape Breton
USNM:PAL
Acrotreta ophirensis descendens Walcott
USNM PAL52143C Walcott & Burling
United States, Utah, Millard County
USNM:PAL
Acrotreta bellatula Walcott
USNM PAL52072D Walcott, Weeks & Burling
United States, Utah, Millard County
USNM:PAL
Acrotreta convexa Walcott
USNM PAL35268A
USNM:PAL
Acrotreta schmalenseei Walcott
USNM PAL18203M
USNM:PAL
Linnarssonella girtyi Walcott
USNM PAL139515
United States, South Dakota
USNM:PAL
Acrotreta yentaiensis Resser & Endo
USNM PAL86694 R. Endo
China, Manchoukuo Prov
USNM:PAL
Acrotreta microscopica (Shumard)
USNM PAL52120B C. Walcott 1884-00-00
United States, Texas, Burnet County
USNM:PAL
Acrotreta lisani Walcott
USNM PAL52505B Blackwelder
China, Shantung
USNM:PAL
Acrotreta pacifica Walcott
USNM PAL52508A
USNM:PAL
Acrothyra minor Walcott
USNM PAL139496
United States, Idaho, Oneida County
USNM:PAL
Acrotreta attenuata Meek
USNM PAL52066
USNM:PAL
Acrotreta ophirensis Walcott
USNM PAL35281N
USNM:PAL
Acrotreta sagittalis (Salter)
USNM PAL52163A
USNM:PAL
Acrothyra
USNM PAL280993 C. Walcott
Canada, British Columbia
USNM:PAL
Eurytreta sublata Popov
USNM PAL516768 J. Miller
United States, Utah, Millard County
USNM:PAL
Acrotreta idahoensis Walcott
USNM PAL52091G
USNM:PAL
Acrotreta metisensis Howell
USNM PAL497160 A. Keith
Canada, Quebec
USNM:PAL
Acrotreta gracia Walcott
USNM PAL35272B C. Walcott
Canada, New Brunswick, Saint John County
USNM:PAL
Linnarssonella tennesseensis Walcott
USNM PAL35289B C. Walcott
United States, Tennessee, Roane County
USNM:PAL
Linnarssonella tennesseensis Walcott
USNM PAL35288C
USNM:PAL
Conotreta rusti Walcott
USNM PAL18443B W. Rust
United States, New York
USNM:PAL
Acrotreta idahoensis Walcott
USNM PAL52091H
USNM:PAL
Conotreta depressa Cooper
USNM PAL116815J G. Cooper
United States, Alabama, Bibb County
USNM:PAL
Acrotreta definita Walcott
USNM PAL35270F Spence
United States, Idaho, Bear Lake County
USNM:PAL
Acrotreta venia Walcott
USNM PAL60777 R. Endo
China, Manchoukuo Prov
USNM:PAL
Acrotreta sagittalis taconica (Walcott)
USNM PAL17441A
USNM:PAL
Acrotreta primaeva Walcott
USNM PAL15342A
USNM:PAL
Linnarssonella modesta Walcott
USNM PAL53679A
USNM:PAL
Acrothyra minor Walcott
USNM PAL52051 Walcott & Burling 1906-00-00
United States, Idaho, Oneida County
USNM:PAL
Acrotreta curvata Walcott
USNM PAL35269F C. Walcott
United States, Nevada, Eureka County
USNM:PAL
Acrotreta schmalenseei Walcott
USNM PAL18203H G. Schmalensee
Sweden, Christianstad Prov
USNM:PAL
Prototreta attenuata (Meek)
USNM PAL7867A
USNM:PAL
Acrotreta ophirensis Walcott
USNM PAL35281F
USNM:PAL
Eurytreta bisecta (Matthew)
USNM PAL516755 J. Miller
United States, Utah, Millard County
USNM:PAL
Acrotreta subsidua White
USNM PAL15345A
USNM:PAL
Acrotreta curvata Walcott
USNM PAL35269M
USNM:PAL
Acrotreta ophirensis rugosa Walcott
USNM PAL35282C C. Walcott
United States
USNM:PAL
Acrotreta bisecta Matthew
USNM PAL52073 S. Loper
Canada, Nova Scotia
USNM:PAL
Acrotreta schmalenseei Walcott
USNM PAL18203O
USNM:PAL
Acrotreta pyxidicula White
USNM PAL8570A
USNM:PAL
Acrotreta schmalenseei Walcott
USNM PAL18203F
USNM:PAL
Acrotreta ophirensis Walcott
USNM PAL35281P C. Walcott
United States, Utah, Tooele County
USNM:PAL
Apsotreta orifera Palmer
USNM PAL185982 1947-00-00
United States, Texas, Mason County
USNM:PAL
Canthylotreta marjumensis (Walcott)
USNM PAL139500
United States, Utah, Millard County
USNM:PAL
Acrothyra proavia (Matthew)
USNM PAL52052H S. Loper 1901-00-00
Canada, Nova Scotia, Cape Breton
USNM:PAL
Apsotreta orifera Palmer
USNM PAL185980 1947-00-00
United States, Texas, Mason County
USNM:PAL
Linnarssonella urania Walcott
USNM PAL52202C
USNM:PAL
Linnarssonella girtyi Walcott
USNM PAL35287K C. Walcott
United States, South Dakota, Lawrence County
USNM:PAL
Acrotreta parvula (Wallerius)
USNM PAL35283B
USNM:PAL
Linnarssonella modesta Walcott
USNM PAL53679A Burling
United States, Utah, Millard County
USNM:PAL
Acrotreta idahoensis Walcott
USNM PAL52089E C. Walcott
United States, South Dakota, Lawrence County
USNM:PAL
Spondylotreta concentrica Cooper
USNM PAL116826C G. Cooper
United States, Alabama, Bibb County
USNM:PAL
Acrotreta parvula (Wallerius)
USNM PAL35283A G. Schmalensee
Sweden
USNM:PAL
Acrotreta shantungensis Walcott
USNM PAL52512A Blackwelder & Willis
China, Shantung
USNM:PAL
Quadrisonia lavadamensis Popov et al.
USNM PAL516764 J. Miller
United States, Utah, Millard County
USNM:PAL
Acrotreta orientalis Resser & Endo
USNM PAL57764A
USNM:PAL
Acrotreta schmalenseei Walcott
USNM PAL18203L G. Schmalensee
Sweden, Christianstad Prov
USNM:PAL
Linnarssonella modesta Walcott
USNM PAL52197F
USNM:PAL
Acrotreta curvata Walcott
USNM PAL35269A
USNM:PAL
Acrotreta idahoensis Walcott
USNM PAL52091A C. Walcott 1898-00-00
United States, Idaho, Oneida County
USNM:PAL
Acrotreta schmalenseei Walcott
USNM PAL18203E G. Schmalensee
Sweden, Christianstad Prov
USNM:PAL
Acrotreta attica Walcott
USNM PAL140752D Shell Development Co.
United States, Montana, Mccone County
USNM:PAL
Acrotreta curvata Walcott
USNM PAL35269N
USNM:PAL
Acrotreta gemma Billings
USNM PAL35269J C. Walcott 1880-00-00
United States, Nevada, Eureka District
USNM:PAL
Conotreta rusti Walcott
USNM PAL18443B
USNM:PAL
Acrotreta sagittalis transversa (Hartt)
USNM PAL52160H C. Walcott 1888-00-00
Canada, Newfoundland
USNM:PAL
Angulotreta triangularis Palmer
USNM PAL208284
United States, Texas
USNM:PAL
Acrotreta metisensis Howell
USNM PAL497157 A. Keith
Canada, Quebec
USNM:PAL
Acrotreta kutorgai Walcott
USNM PAL52110A C. Walcott
United States, Alabama, Jefferson County
USNM:PAL
Linnarssonella girtyi Walcott
USNM PAL139510
United States, South Dakota
USNM:PAL
Acrothyra gregaria Walcott
USNM PAL280977 C. Walcott
Canada, British Columbia
USNM:PAL
Acrotreta magna Cooper
USNM PAL109724 G. Cooper
Canada, Quebec, Stanbridge Twp
USNM:PAL
Eurytreta fillmorensis Holmer et al.
USNM PAL526142
United States, Utah, Millard County
USNM:PAL
Acrotreta knoxvillensis Resser
USNM PAL35288D
USNM:PAL
Acrothyra proavia (Matthew)
USNM PAL52052P S. Loper 1901-00-00
Canada, Nova Scotia, Cape Breton
USNM:PAL
Linnarssonia sagittalis taconica Walcott
USNM PAL52163A
USNM:PAL
Acrotreta spinosa Walcott
USNM PAL52176E
USNM:PAL
Acrotreta curvata Walcott
USNM PAL35269D
USNM:PAL
Acrotreta idahoensis alta Walcott
USNM PAL35273A C. Walcott
United States, Nevada, Eureka County
USNM:PAL
Acrothyra gregaria Walcott
USNM PAL280985 C. Walcott
Canada, British Columbia
USNM:PAL
Acrotreta sagittalis (Salter)
USNM PAL52155D
Wales
USNM:PAL
Acrotreta microscopica (Shumard)
USNM PAL52120A C. Walcott 1884-00-00
United States, Texas, Burnet County
USNM:PAL
Acrotreta discoidea Walcott
USNM PAL69685 Walcott Et Al
Canada, British Columbia
USNM:PAL
Acrotreta gemma Billings
USNM PAL15343A
USNM:PAL
Acrotreta curvata Walcott
USNM PAL35269A
USNM:PAL
Acrotreta attenuata Meek
USNM PAL52068A
USNM:PAL
Acrotreta ophirensis descendens Walcott
USNM PAL52143D
USNM:PAL
Acrotreta pileata Resser & Endo
USNM PAL86697D R. Endo
China, Manchoukuo Prov
USNM:PAL
Acrothyra gregaria Walcott
USNM PAL280986 C. Walcott
Canada, British Columbia
USNM:PAL
Acrotreta idahoensis Walcott
USNM PAL52089A