USNM:PAL
Heteroceras newtoni Whitfield
USNM PAL12288
USNM:PAL
Heteroceras stevensoni Whitfield
USNM PAL553356 J. Hatcher
United States, Wyoming, Weston County
USNM:PAL
Heteroceras cheyennense Meek
USNM PAL470
USNM:PAL
Heteroceras umbilicatum Meek & Hayden
USNM PAL472
USNM:PAL
Heteroceras umbilicatum Meek & Hayden
USNM PAL472
USNM:PAL
Heteroceras nebrascense Meek & Hayden
USNM PAL12292
USNM:PAL
Heteroceras tortune Meek & Hayden
USNM PAL471
USNM:PAL
Heteroceras nebrascense Meek & Hayden
USNM PAL28361
USNM:PAL
Heteroceras stevensoni Whitfield
USNM PAL553358 J. Hatcher
United States, Wyoming, Weston County
USNM:PAL
Heteroceras angulatum Meek
USNM PAL474
USNM:PAL
Heteroceras cooperi Gabb
USNM PAL1350
USNM:PAL
Heteroceras stevensoni Whitfield
USNM PAL553365 J. Hatcher
United States, Wyoming, Weston County
USNM:PAL
Heteroceras nebrascense Meek & Hayden
USNM PAL469
UCM:IP
Heteroceras nebrascense
13 Stanton, T
United States, Colorado, Boulder
UCM:IP
Heteroceras nebrascense
38 Stanton, T
United States, Colorado, Boulder
UCM:IP
Heteroceras cochleatum
75 Henderson, Junius
United States, Colorado, Boulder
UCM:IP
1069 Henderson, Junius
United States, Colorado, Boulder, 40.121579 -105.235307
UCM:IP
Heteroceras nebrascense
1298 Henderson, Junius
United States, Colorado, Boulder, 40.065501 -105.272729
UCM:IP
Heteroceras cochleatum
1310 Henderson, Junius
United States, Colorado, Boulder, 40.065501 -105.272729
UCM:IP
Heteroceras tortum
1347 Henderson, Junius; Rohwer, Sievert; Rohwer, Frank
United States, Colorado, Boulder, 40.079981 -105.272792
UCM:IP
1366 Henderson, Junius
United States, Colorado, Boulder, 40.079981 -105.272792
UCM:IP
1367 Henderson, Junius
United States, Colorado, Boulder, 40.079981 -105.272792
UCM:IP
Heteroceras cochleatum
1369 Henderson, Junius
United States, Colorado, Boulder, 40.079981 -105.272792
UCM:IP
1372 Henderson, Junius
United States, Colorado, Boulder, 40.079981 -105.272792
UCM:IP
1391 Henderson, Junius
United States, Colorado, Boulder, 40.079981 -105.272792
UCM:IP
1731 Henderson, Junius
United States, Colorado, Boulder, 40.094486 -105.272886
UCM:IP
1732 Henderson, Junius
United States, Colorado, Boulder, 40.094486 -105.272886
UCM:IP
Heteroceras cochleatum
1733 Henderson, Junius
United States, Colorado, Boulder, 40.094486 -105.272886
UCM:IP
Heteroceras cochleatum
1972 Henderson, Junius
United States, Colorado, Larimer, 40.307008 -105.120917
UCM:IP
Heteroceras nebrascense
2034 Henderson, Junius
United States, Colorado, Jefferson, 39.913415 -105.265739
UCM:IP
2588 Greenman, Ernest
United States, Wyoming, Albany, 41.725059 -105.888961
UCM:IP
2678 Henderson, Junius; Worcester, P; Butters, R; Aurand, H 1910-02-00
United States, Colorado, Boulder, 40.065501 -105.272729
UCM:IP
3631 Hinds, Norman
United States, Colorado, Boulder, 40.073782 -105.265654
UCM:IP
Heteroceras cochleatum
4472 Smith, A; Hinds, Norman 1911-08-26
United States, Colorado, Grand, 40.339501 -106.472426
UCM:IP
4580 Grout, F; Henderson, Junius 1911-07-06
United States, Colorado
UCM:IP
4798 Rathvon, S
United States, Colorado, Jackson, 40.731542 -106.130641
UCM:IP
Heteroceras nebrascense
4839 Henderson, Junius
United States, Colorado, Boulder, 40.111374 -105.224155
UCM:IP
7852 Henderson, Junius; Andrews, P 1917-06-27
United States, Colorado, Pueblo
UCM:IP
7858 Henderson, Junius; Andrews, Philip 1917-06-28
United States, Colorado, 38.388681 -104.1649
UCM:IP
7888 Wheatley, George
United States, Colorado, Archuleta, 37.267246 -107.022955
UCM:IP
9342 Myers, John 1920-00-00
United States, Wyoming, Niobrara, 43.028018 -104.709885
UCM:IP
Heteroceras tortum
9393 Rennie, W; Myers, John
United States, Wyoming, Weston, 43.863854 -104.43705
UCM:IP
Heteroceras nebrascense
9402 Rennie, W; Myers, John
United States, Wyoming, Weston, 43.863854 -104.43705
UCM:IP
12519 Henderson, Junius; Smith, Earl 1922-07-00
United States, Colorado, Larimer, 40.666417 -105.461144
UCM:IP
Heteroceras nebrascense
13517
United States, Montana, Blaine/Chouteau/Fergus, 47.294108 -109.98516
UCM:IP
Heteroceras nebrascense
13843 Stewart, A
United States, Colorado
UCM:IP
Heteroceras tortum
14173 Aurand, H; Hunter, J
United States, Colorado, Fremont, 38.3547 -105.0601
UCM:IP
Heteroceras cochleatum
14849 Aurand; Hunter
United States, Colorado, Fremont, 38.352261 -105.079535
UCM:IP
Heteroceras cochleatum
14872 Lavington, Charles; Philbrick, E 1924-00-00
United States, Colorado, Fremont, 38.366775 -105.079573
UCM:IP
17394 Higgins, D
United States, Colorado, Larimer, 40.863137 -105.085565
UCM:IP
Heteroceras cochleatum
17881 Henderson, Junius 1928-00-00
United States, Colorado, Boulder, 40.072961 -105.270546
UCM:IP
Heteroceras nebrascense
17882 Henderson, Junius 1928-00-00
United States, Colorado, Boulder, 40.072961 -105.270546
UCM:IP
Heteroceras nebrascense
17883 Henderson, Junius 1928-00-00
United States, Colorado, Boulder, 40.072961 -105.270546
UCM:IP
1370 Henderson, Junius
United States, Colorado, Boulder, 40.079981 -105.272792
UCM:IP
1371 Henderson, Junius
United States, Colorado, Boulder, 40.079981 -105.272792
UCM:IP
Heteroceras cochleatum
109282 Henderson, Junius
United States, Colorado, Boulder, 40.094486 -105.272886