USNM:PAL
Helodus
USNM PAL457142
United States, Alabama, Madison County
USNM:PAL
Helodus
USNM PAL338824 F. Springer
United States, Iowa
USNM:PAL
Helodus
USNM PAL449061 O. St.John 1869-06-13
United States, Iowa, Warren County
USNM:PAL
Helodus politus Newberry & Worthen
USNM V3484
United States, Iowa
USNM:PAL
Helodus symmetricalis (St.John & Worthen)
USNM V15620 A. Worthen
United States, Illinois
USNM:PAL
Helodus nobilis (Leidy)
USNM V3507 L. Cox
United States, Iowa
USNM:PAL
Helodus
USNM PAL338846 O. St.John
United States, Missouri
USNM:PAL
Helodus
USNM PAL235402 J. Smedley 1950-00-00
United States, Wyoming, Fremont County
USNM:PAL
Helodus
USNM PAL338838 O. St.John
United States, Illinois
USNM:PAL
Helodus
USNM PAL338818 O. St.John
United States, Iowa
USNM:PAL
Helodus
USNM PAL338832 F. Springer
United States, Iowa
USNM:PAL
Helodus angulatus Newberry & Worthen
USNM V14592 F. Springer 1870-00-00
United States, Iowa
USNM:PAL
Helodus wortheni Hay
USNM V15627 W. Van Horn 1871-00-00
United States, Illinois
USNM:PAL
Helodus
USNM PAL338835 F. Springer
United States, Iowa
USNM:PAL
Helodus
USNM PAL235396 E. Yochelson & Sheldon 1959-00-00
United States, Wyoming, Teton County
USNM:PAL
Helodus politus Newberry & Worthen
USNM PAL339317 C. Wachsmuth
United States, Iowa, Des Moines County
USNM:PAL
Helodus nobilis (Leidy)
USNM V3485 L. Cox
United States, Iowa
USNM:PAL
Helodus
USNM PAL338825
United States, Iowa, Louisa County
USNM:PAL
Helodus
USNM PAL338848 F. Springer
United States, Iowa
USNM:PAL
Helodus
USNM PAL449064
United States, Iowa, Calhoun County
USNM:PAL
Helodus
USNM V14583 F. Springer
United States, Illinois
USNM:PAL
Helodus rugosus Newberry & Worthen
USNM V14341 O. St.John
United States, Illinois
USNM:PAL
Helodus
USNM PAL235397 J. Smedley 1951-00-00
United States, Wyoming
USNM:PAL
Helodus
USNM PAL235400 J. Smedley 1950-00-00
United States, Wyoming, Sublette County
USNM:PAL
Helodus
USNM PAL339328
United States, Michigan
USNM:PAL
Helodus
USNM V4153 1898-03-00
United States, Texas, Young County
USNM:PAL
Helodus politus Newberry & Worthen
USNM V14588 O. St.John
United States, Iowa
USNM:PAL
Helodus wortheni Hay
USNM V15618 W. Van Horn
United States, Iowa
USNM:PAL
Helodus
USNM PAL457345 O. St.John
United States, Iowa
USNM:PAL
Helodus
USNM V4615
Belgium
USNM:PAL
Helodus
USNM PAL457349 O. St.John 27
United States, Iowa
USNM:PAL
Helodus
USNM PAL338823 F. Springer
United States, Iowa, Louisa County
USNM:PAL
Helodus politus Newberry & Worthen
USNM PAL339315 C. Wachsmuth 1873-00-00
United States, Iowa, Des Moines County
USNM:PAL
Helodus coxanus Newberry
USNM V3518 L. Cox
United States, Iowa
USNM:PAL
Helodus
USNM V14787 O. St.John 1863-00-00
United States, Indiana
USNM:PAL
Helodus
USNM V3517 L. Cox
United States, Iowa
USNM:PAL
Helodus
USNM V14337
USNM:PAL
Helodus nobilis (Leidy)
USNM V14217 O. St.John
United States, Iowa
USNM:PAL
Helodus
USNM PAL457362 F. Springer
United States, Iowa
USNM:PAL
Helodus coniculus Newberry & Worthen
USNM V14323 O. St.John 1875-00-00
United States, Illinois
USNM:PAL
Helodus
USNM PAL338822 F. Springer
United States, Iowa
USNM:PAL
Helodus
USNM PAL317749 O. St.John 41
United States, Iowa
USNM:PAL
Helodus denshumani Newberry & Worthen
USNM V3486 L. Cox
United States, Iowa
USNM:PAL
Helodus
USNM PAL542535 2009-01-26
United States, Illinois, Wabash County
USNM:PAL
Helodus didymus Agassiz
USNM V14589 Brewster 1860-00-00
Ireland
USNM:PAL
Helodus laevissimus Agassiz
USNM V14333
Ireland
USNM:PAL
Helodus wortheni Hay
USNM PAL339322 Van Horne
United States, Iowa, Des Moines County
USNM:PAL
Helodus
USNM PAL235399 J. Smedley 1950-00-00
United States, Wyoming, Sublette County
USNM:PAL
Helodus
USNM PAL326430 C. Sandberg 1961-00-00
United States, South Dakota, Lawrence County
USNM:PAL
Helodus
USNM PAL338810 O. St.John 1884-00-00
United States, Iowa
USNM:PAL
Helodus compressus Newberry & Worthen
USNM V14336 F. Springer
United States, Iowa
USNM:PAL
Helodus
USNM PAL338845 O. St.John
United States, Missouri
USNM:PAL
Helodus
USNM PAL338843 O. St.John
United States, Missouri
USNM:PAL
Helodus gibberulus Agassiz
USNM V16125
Ireland
USNM:PAL
Helodus
USNM V15634 F. Springer
United States, Iowa
USNM:PAL
Helodus compressus Newberry & Worthen
USNM V14335 O. St.John
United States, Iowa
USNM:PAL
Helodus
USNM PAL338827 O. St.John 1869-00-00
United States, Iowa, Marshall County
USNM:PAL
Helodus politus Newberry & Worthen
USNM PAL339319 O. St.John
United States, Iowa, Des Moines County
USNM:PAL
Helodus
USNM PAL457357 O. St.John
United States, Iowa
USNM:PAL
Helodus crenulatus Newberry & Worthen
USNM PAL457227 O. St.John 1868-00-00
United States, Iowa, Louisa County
USNM:PAL
Helodus crenulatus Newberry & Worthen
USNM PAL457228 F. Springer
United States, Illinois
USNM:PAL
Helodus
USNM V14591 F. Springer
United States, Missouri
USNM:PAL
Helodus
USNM PAL338842 F. Springer
United States, Missouri
USNM:PAL
Helodus
USNM PAL314762 O. St.John
United States, Iowa
USNM:PAL
Helodus
USNM PAL338821
United States, Iowa
USNM:PAL
Helodus
USNM PAL339326 O. St.John
United States, Iowa
USNM:PAL
Helodus
USNM PAL457358 O. St.John
United States, Iowa
USNM:PAL
Helodus nobilis (Leidy)
USNM V14322 F. Springer
United States, Iowa
USNM:PAL
Helodus
USNM PAL338839 O. St.John
United States, Illinois
USNM:PAL
Helodus politus Newberry & Worthen
USNM PAL339314 F. Springer
United States, Missouri
USNM:PAL
Helodus
USNM PAL449058 F. Springer
United States, Iowa
USNM:PAL
Helodus
USNM V14775 O. St.John 1863-00-00
United States, Indiana
USNM:PAL
Helodus crenolatus Newberry & Worthen
USNM V14584 F. Springer
United States, Iowa
USNM:PAL
Helodus politus Newberry & Worthen
USNM PAL449056 O. St.John 1868-00-00
United States, Iowa, Louisa County
USNM:PAL
Helodus planus Agassiz
USNM V14580
Ireland
USNM:PAL
Helodus
USNM PAL542552 2009-01-26
United States, Illinois, Wabash County
USNM:PAL
Helodus
USNM PAL338826
United States, Iowa, Louisa County
USNM:PAL
Helodus
USNM PAL338817 O. St.John
United States, Iowa
USNM:PAL
Helodus
USNM PAL457355 O. St.John
United States, Iowa
USNM:PAL
Helodus politus Newberry & Worthen
USNM PAL339320 O. St.John
United States, Iowa
USNM:PAL
Helodus
USNM PAL338836 F. Springer
United States, Iowa
USNM:PAL
Helodus
USNM PAL338820 F. Springer
United States, Iowa
USNM:PAL
Helodus
USNM PAL338840 F. Springer
United States, Illinois
USNM:PAL
Helodus
USNM PAL338841 O. St.John
United States, Illinois
USNM:PAL
Helodus planus Agassiz
USNM V16127
Ireland
USNM:PAL
Helodus carbonarius Newberry & Worthen
USNM V14327 O. St.John
United States, Iowa
USNM:PAL
Helodus coniculus Newberry & Worthen
USNM PAL339325
United States, Iowa, Louisa County
USNM:PAL
Helodus
USNM V14334 O. St.John
United States, Iowa
USNM:PAL
Helodus
USNM PAL338837
United States, Kentucky
USNM:PAL
Helodus obliquus M'Coy
USNM V14587
Ireland
USNM:PAL
Helodus sulcatus Newberry & Worthen
USNM V14581 F. Springer
United States, Iowa