USNM:PAL
Acrotreta atticus Walcott
USNM PAL61682
USNM:PAL
Linnarssonella transversa Walcott
USNM PAL98693B
United States, Missouri, St. Francois County
USNM:PAL
Acrothyra sera (Matthew)
USNM PAL52055A S. Loper 1903-00-00
Canada, Nova Scotia, Cape Breton
USNM:PAL
Acrotreta primaeva Walcott
USNM PAL52061A C. Walcott
United States, Nevada, Lincoln County
USNM:PAL
Acrotreta ophirensis descendens Walcott
USNM PAL52143A Walcott & Burling
United States, Utah, Millard County
USNM:PAL
Acrotreta gemma Billings
USNM PAL35273A C. Walcott
United States, Nevada, Eureka District
USNM:PAL
Acrotreta idahoensis Walcott
USNM PAL52091F
USNM:PAL
Acrotreta gracia Walcott
USNM PAL35272C C. Walcott
Canada, New Brunswick, Saint John County
USNM:PAL
Acrotreta pyxidicula White
USNM PAL52149D C. Walcott 1905-00-00
United States, Montana, Gallatin County
USNM:PAL
Linnarssonella peapackensis Howell
USNM PAL511940 B. Howell 1925-00-00
United States, New Jersey
USNM:PAL
Opisthotreta depressa Palmer
USNM PAL186044 1947-00-00
United States, Texas, Mason County
USNM:PAL
Acrotreta definita Walcott
USNM PAL35271B C. Walcott
United States, Nevada, Eureka County
USNM:PAL
Acrothyra proavia (Matthew)
USNM PAL52052F S. Loper 1901-00-00
Canada, Nova Scotia, Cape Breton
USNM:PAL
Acrotreta attenuata Meek
USNM PAL52067B
USNM:PAL
Linnarssonella girtyi Walcott
USNM PAL140665E Shell Development Co.
United States, Montana, Mccone County
USNM:PAL
Acrothyra urania (Walcott)
USNM PAL139491
United States, Utah, Salt Lake County
USNM:PAL
Physotreta spinosa (Walcott)
USNM PAL139525
United States, Nevada, Eureka County
USNM:PAL
Linnarssonella girtyi Walcott
USNM PAL52188B
USNM:PAL
Acrotreta bisecta Matthew
USNM PAL52073D
USNM:PAL
Acrotreta schmalenseei Walcott
USNM PAL18203K
USNM:PAL
Acrotreta microscopica (Shumard)
USNM PAL52119C F. Weeks 1900-00-00
United States, Nevada, White Pine County
USNM:PAL
Linnarssonia taconica Walcott
USNM PAL17441A C. Walcott 1886-00-00
United States, New York, Washington County
USNM:PAL
Acrotreta curvata Walcott
USNM PAL35269N C. Walcott
United States, Nevada, Eureka County
USNM:PAL
Acrotreta idahoensis Walcott
USNM PAL52089B
USNM:PAL
Linnarssonella girtyi Walcott
USNM PAL140665K Shell Development Co.
United States, Montana, Mccone County
USNM:PAL
Linnarssonella nitens Walcott
USNM PAL52198A Burling
United States, Utah, Millard County
USNM:PAL
Apsotreta expansa Palmer
USNM PAL186037 1947-00-00
United States, Texas, Mason County
USNM:PAL
Acrotreta parvula (Wallerius)
USNM PAL35283A
USNM:PAL
Acrotreta seebachi Walcott
USNM PAL52172A W. Brogger
Norway
USNM:PAL
Acrotreta convexa Walcott
USNM PAL52084A
USNM:PAL
Acrotreta sagittalis transversa (Hartt)
USNM PAL52160G C. Walcott 1888-00-00
Canada, Newfoundland
USNM:PAL
Linnarssonia sagittalis taconica Walcott
USNM PAL52165A
USNM:PAL
Acrotreta pacifica Walcott
USNM PAL52508A Blackwelder
China, Shantung
USNM:PAL
Hadrotreta primaaea (Walcott)
USNM PAL139482
United States, Nevada, Lincoln County
USNM:PAL
Acrotreta idahoensis Walcott
USNM PAL52091H C. Walcott 1898-00-00
United States, Idaho, Oneida County
USNM:PAL
Acrotreta idahoensis Walcott
USNM PAL52089C
USNM:PAL
Acrotreta socialis Seebach
USNM PAL35286D
USNM:PAL
Linnarssonella tennesseensis Walcott
USNM PAL35288F
USNM:PAL
Linnarssonella girtyi Walcott
USNM PAL35287M C. Walcott
United States, South Dakota, Lawrence County
USNM:PAL
Acrotreta depressa Walcott
USNM PAL52086E
USNM:PAL
Acrotreta kutorgai Walcott
USNM PAL52110B C. Walcott
United States, Alabama, Jefferson County
USNM:PAL
Acrothyra urania (Walcott)
USNM PAL139489
United States, Utah, Salt Lake County
USNM:PAL
Conotreta alta Cooper
USNM PAL109715 R. Mesler
United States, Tennessee, Blount County
USNM:PAL
Conotreta gigantea Cooper
USNM PAL109734C G. Cooper
United States, Alabama, Bibb County
USNM:PAL
Acrotreta sulcata (Walcott)
USNM PAL52109A Walcott & Burling 1906-00-00
United States, Idaho, Oneida County
USNM:PAL
Linnarssonella transversa Walcott
USNM PAL203720
United States, Missouri, Ste. Genevieve County
USNM:PAL
Acrotreta argenta Walcott
USNM PAL52062A
USNM:PAL
Acrothyra sera (Matthew)
USNM PAL52054N S. Loper 1903-00-00
Canada, Nova Scotia, Cape Breton
USNM:PAL
Acrotreta bisecta Matthew
USNM PAL52073B
USNM:PAL
Acrotreta convexa Walcott
USNM PAL35268B
USNM:PAL
Linnarssonella girtyi Walcott
USNM PAL140665H Shell Development Co.
United States, Montana, Mccone County
USNM:PAL
Acrotreta parvula (Wallerius)
USNM PAL35283B G. Schmalensee
Sweden
USNM:PAL
Acrotreta kutorgai Walcott
USNM PAL35277C C. Walcott
United States, Alabama, Cherokee County
USNM:PAL
Acrotreta definita Walcott
USNM PAL35270C Spence
United States, Idaho, Bear Lake County
USNM:PAL
Acrotreta (Jolonica) attica Walcott
USNM PAL140752K
USNM:PAL
Conotreta magna Cooper
USNM PAL109732C G. Cooper
United States, Tennessee
USNM:PAL
Pegmatreta arellanoi Cooper
USNM PAL116058F
USNM:PAL
Acrotreta attica Walcott
USNM PAL140752L
USNM:PAL
Eurytreta sublata Popov
USNM PAL516772 J. Miller
United States, Utah, Millard County
USNM:PAL
Conotreta gigantea Cooper
USNM PAL109734B G. Cooper
United States, Alabama, Bibb County
USNM:PAL
Angulotreta microscopica var. digitalis Bell in Bell & Ellinwood
USNM PAL185560
United States, Texas, Llano County
USNM:PAL
Acrotreta ophirensis rugosa Walcott
USNM PAL35282F
USNM:PAL
Acrotreta idahoensis alta Walcott
USNM PAL52099A G. Gilbert 1901-00-00
United States, Utah, Juab County
USNM:PAL
Physotreta spinosa (Walcott)
USNM PAL139534
United States, Nevada, Eureka County
USNM:PAL
Acrotreta ophirensis rugosa Walcott
USNM PAL35282A C. Walcott
United States
USNM:PAL
Spondylotreta declivis (Willard)
USNM PAL109727B G. Cooper
United States, Virginia
USNM:PAL
Acrotreta attica Walcott
USNM PAL140752G Shell Development Co.
United States, Montana, Mccone County
USNM:PAL
Acrotreta sagittalis magna (Matthew)
USNM PAL35284B Matthew & Walcott
Canada, New Brunswick, Saint John County
USNM:PAL
Acrotreta ophirensis rugosa Walcott
USNM PAL35282D C. Walcott
United States
USNM:PAL
Acrotreta sagittalis taconica (Walcott)
USNM PAL52163D C. Walcott
United States, New York, Washington County
USNM:PAL
Conotreta multisinuata Cooper
USNM PAL109738A G. Cooper
United States, Virginia
USNM:PAL
Acrothyra sera (Matthew)
USNM PAL52054B S. Loper 1903-00-00
Canada, Nova Scotia, Cape Breton
USNM:PAL
Acrothyra gregaria Walcott
USNM PAL280972 C. Walcott
Canada, British Columbia
USNM:PAL
Acrothyra gregaria Walcott
USNM PAL280981 C. Walcott
Canada, British Columbia
USNM:PAL
Conotreta apicalis Cooper
USNM PAL116813F G. Cooper
United States, Alabama, Bibb County
USNM:PAL
Linnarssonella girtyi Walcott
USNM PAL35287L C. Walcott
United States, South Dakota, Lawrence County