USNM:PAL
Trigonia eufaulensis Gabb
USNM PAL31070
USNM:PAL
Trigonia goodellii Cragin
USNM PAL29042
USNM:PAL
Trigonia calderoni (Castillo & Aguilera)
USNM PAL29013
USNM:PAL
Trigonia haynensis Stephenson
USNM PAL31649
USNM:PAL
Trigonias
USNM PAL361476 Smithsonian Institution Museum of Natural History 1948-08-07
United States, Montana, Jefferson County
USNM:PAL
Trigonia vyschetzkii Cragin
USNM PAL29020
USNM:PAL
Trigonia thoracica Morton
USNM PAL131569
USNM:PAL
Trigonia rudicostata Cragin
USNM PAL28981
USNM:PAL
Trigonias
USNM PAL361477 C. Gazin et al 1948-08-12
United States, Montana, Jefferson County
USNM:PAL
USNM PAL103306 1938-00-00
United States, Arkansas, Ouachita County
USNM:PAL
Trigonia calderoni (Castillo & Aquilera)
USNM PAL103626
United States, Louisiana, Claiborne Parish
USNM:PAL
Trigonia americana Meek
USNM PAL7794
USNM:PAL
Trigonia elegantissima Meek
USNM PAL131963
USNM:PAL
USNM PAL316171
USNM:PAL
Trigonia hemisphaerica Lycett
USNM PAL103485
USNM:PAL
Trigonias osborni Lucas
USNM V5327 J. Hatcher 1886-08-13
United States, Nebraska, Sioux County
USNM:PAL
Trigonias
USNM PAL364952 Clifford & Hatcher 1886-05-31
United States, South Dakota, Washington County
USNM:PAL
Trigonia reticulata
USNM PAL74826
USNM:PAL
USNM PAL76429
USNM:PAL
Trigonia conradi Meek & Hayden
USNM PAL212
USNM:PAL
Trigonia praestriata Cragin
USNM PAL29001
USNM:PAL
Trigonia castrovillensis Stephenson
USNM PAL76421
USNM:PAL
Trigonias
USNM PAL364953 J. Hatcher 1886-00-00
United States, South Dakota
USNM:PAL
Trigonia stolleyi Hill
USNM PAL145634
USNM:PAL
Trigonia stolleyi Hill
USNM PAL316193 G. Stolley
United States, Texas
USNM:PAL
Trigonia (Kumatrigonia) Stanley
USNM PAL158691 Reed & Williams
United States, Idaho, Nez Perce County
USNM:PAL
Trigonia evansi Meek
USNM PAL7529
USNM:PAL
Trigonia rudicostata Cragin
USNM PAL315405
United States, Texas
USNM:PAL
Trigonia quadrangularis Hall & Whitfield
USNM PAL22243
USNM:PAL
Trigonia bartrami Stephenson
USNM PAL31640
USNM:PAL
Trigonias
USNM V1416 J. Hatcher 1886-00-00
United States, South Dakota
USNM:PAL
Trigonia stantoni Stephenson
USNM PAL76417
USNM:PAL
Trigonia trafalgarensis Warren
USNM:PAL
USNM PAL21184
USNM:PAL
Trigonia naviformis Hyatt
USNM PAL32478A
USNM:PAL
Trigonia elegantissima Meek
USNM PAL131960
USNM:PAL
Trigonia elegantissima Meek
USNM PAL131959
USNM:PAL
Trigonia lorentii Dana
USNM PAL3581
USNM:PAL
Trigonia plumasensis Hyatt
USNM PAL32480
USNM:PAL
Trigonia castrovillensis Stephenson
USNM PAL76420
USNM:PAL
Trigonia crenulata Roemer
USNM PAL145635
USNM:PAL
Trigonias osborni Lucas
USNM V4815 J. Hatcher 1886-00-00
United States, South Dakota
USNM:PAL
Trigonia marionensis Stephenson
USNM PAL31644
USNM:PAL
Trigonia trafalgarensis Warren
USNM:PAL
Trigonia montanaensis Meek
USNM PAL7817
USNM:PAL
USNM PAL76428
USNM:PAL
Trigonias osborni Lucas
USNM PAL205935 Johnson Et Al 1935-00-00
United States, Colorado
USNM:PAL
Trigonia thoracica Morton
USNM PAL129702 Collector Unknown
United States, Tennessee, McNairy County
USNM:PAL
Trigonia bartrami Stephenson
USNM PAL31637
USNM:PAL
Trigonia eufaulensis Gabb
USNM PAL128112
USNM:PAL
Trigonia naviformis Hyatt
USNM PAL32478
USNM:PAL
Trigonia angulicostata Gabb
USNM PAL20666
USNM:PAL
Trigonias
USNM V1417 J. Hatcher 1886-00-00
United States, South Dakota
USNM:PAL
Trigonia subcrenulata d'Orbigny
USNM PAL152989
USNM:PAL
Trigonia eufaulensis moorei Stephenson
USNM PAL76427
USNM:PAL
Trigonias
USNM V20943 Smithsonian Institution Museum of Natural History 1951-00-00
United States, Wyoming
USNM:PAL
Trigonia marionensis Stephenson
USNM PAL131765
USNM:PAL
Trigonia elegantissima Meek
USNM PAL28935
USNM:PAL
Trigonia vyschetzkii Cragin
USNM PAL103627
United States, Louisiana, Claiborne Parish
USNM:PAL
Trigonia naviformis Hyatt
USNM PAL32478B
USNM:PAL
Trigonia ammonoides McLearn
USNM:PAL
Trigonia thoracica Morton
USNM PAL32754
USNM:PAL
Trigonia eufaulensis Gabb
USNM PAL128111
USNM:PAL
Trigonias
USNM V1415 J. Hatcher 1886-00-00
United States, South Dakota
USNM:PAL
Trigonia vyschetzkii Cragin
USNM PAL28967
USNM:PAL
USNM PAL76430
USNM:PAL
Trigonia sp a
USNM PAL219927 S. Muller
United States, Nevada
USNM:PAL
Trigonia elegantissima Meek
USNM PAL131964
USNM:PAL
Trigonia obliqua Hyatt
USNM PAL32479
USNM:PAL
Trigonias
USNM PAL364951 1862-10-10
United States, South Dakota
USNM:PAL
Trigonias osborni Lucas
USNM V5326 J. Hatcher 1886-00-00
United States, Nebraska, Sioux County
USNM:PAL
Trigonia perlata
USNM PAL617225
USNM:PAL
Trigonias
USNM PAL364949 1889-00-00
United States, South Dakota
USNM:PAL
Trigonia sp b Poulton
USNM PAL103485
USNM:PAL
Trigonia bartrami Stephenson
USNM PAL31638
USNM:PAL
Trigonia mathewsi Richards
USNM PAL153036
USNM:PAL
Trigonias osborni Lucas
USNM V5340 J. Hatcher 1886-00-00
United States, Nebraska, Sioux County
USNM:PAL
Trigonia rudicostata Cragin
USNM PAL315405
USNM:PAL
Trigonia bartrami Stephenson
USNM PAL73629
USNM:PAL
Trigonia conferticostata Cragin
USNM PAL28985
USNM:PAL
Trigonia varians Engelhardt
USNM P36441
USNM:PAL
Trigonia conferticostata Cragin
USNM PAL316169
United States, Texas
USNM:PAL
Trigonia crenulata peruana Paulcke
USNM PAL73598
USNM:PAL
Trigonias osborni Lucas
USNM V5331 J. Hatcher 1886-00-00
United States, South Dakota
USNM:PAL
Trigonia proscabra Cragin
USNM PAL29023
USNM:PAL
Trigonias
USNM PAL636212
USNM:PAL
Trigonia munita Cragin
USNM PAL29058
USNM:PAL
Trigonia angulicostata Gabb
USNM PAL128109
USNM:PAL
Trigonia proscabra Cragin
USNM PAL28986
USNM:PAL
Trigonia aequicostata Gabb
USNM PAL29459
USNM:PAL
Trigonias osborni Lucas
USNM PAL175585 M. Hough 1952-00-00
United States, Wyoming, Campbell County
USNM:PAL
Trigonia marionensis Stephenson
USNM PAL31642
USNM:PAL
Trigonia texana Conrad
USNM PAL9843
USNM:PAL
Trigonia costata Sowerby
USNM PAL251980 T. Poulton 1972-00-00
United States, Oregon, Grant County
USNM:PAL
Trigonia eufaulensis Gabb
USNM PAL31646
USNM:PAL
Trigonia eufaulensis gabbi Stephenson
USNM PAL76423
USNM:PAL
Trigonia elegantissima Meek
USNM PAL131962
USNM:PAL
Trigonia bartrami Stephenson
USNM PAL31641
USNM:PAL
Trigonias
USNM PAL214536 Emry Et Al Wyo 74-12
United States, Wyoming, Natrona County
USNM:PAL
Trigonias osborni Lucas
USNM V3924 J. Hatcher 1888-00-00
United States, South Dakota, Washington County