USNM:PAL
Ctenacanthus randalli Newberry
USNM PAL328574 F. Randall 1892-00-00
United States, Pennsylvania
USNM:PAL
Ctenacanthus
USNM V4884 L. Cox
United States, Iowa
USNM:PAL
Ctenacanthus keokuk St.John & Worthen
USNM V14714 F. Springer
United States, Iowa
USNM:PAL
Ctenacanthus keokuk St.John & Worthen
USNM PAL369918 G. Williams
United States, Missouri
USNM:PAL
Ctenacanthus lucasi Eastman
USNM V4686 L. Cox
United States, Iowa, Marshall County
USNM:PAL
Ctenacanthus spectabilis St.John & Worthen
USNM V13519 E. Whipple
United States, Iowa, Marshall County
USNM:PAL
Ctenacanthus
USNM V13822 J. Johnson
United States, Colorado, Fremont County
USNM:PAL
Ctenacanthus
USNM V23730 H. Drewes 1966-00-00
United States, Arizona, Santa Cruz County
USNM:PAL
Ctenacanthus gradocostatus St.John & Worthen
USNM PAL328570 F. Springer
United States, Iowa
USNM:PAL
Ctenacanthus
USNM PAL328554 G. Hambach
United States, Missouri
USNM:PAL
Ctenacanthus pellensis St.John & Worthen
USNM V13514 W. Van Horne
United States, Iowa
USNM:PAL
Ctenacanthus venustus Eastman
USNM V3385
United States, Iowa
USNM:PAL
Ctenacanthus speciosus St.John & Worthen
USNM V14133 C. Wachsmuth
United States, Iowa
USNM:PAL
Ctenacanthus mayi Newberry & Worthen
USNM PAL328573 F. Springer
United States, Iowa, Louisa County
USNM:PAL
Ctenacanthus gracillimus Newberry & Worthen
USNM V14716 O. St.John
United States, Iowa
USNM:PAL
Ctenacanthus gracillimus Newberry & Worthen
USNM V14185 W. Van Horne
United States, Illinois
USNM:PAL
Ctenacanthus burlingtonensis St.John & Worthen
USNM PAL328572 O. St.John 1867-00-00
United States, Iowa, Louisa County
USNM:PAL
Ctenacanthus acutus Eastman
USNM V4683 L. Cox
United States, Iowa
USNM:PAL
Ctenacanthus heterogyrus Agassiz
USNM V4620 R. Lacoe
Belgium
USNM:PAL
Ctenacanthus
USNM PAL235384 J. Smedley 1950-00-00
United States, Wyoming, Teton County
USNM:PAL
Ctenacanthus
USNM V14717 F. Springer
United States, Iowa
USNM:PAL
Ctenacanthus
USNM PAL235385 H. Saunders 1951-00-00
United States, Wyoming, Teton County
USNM:PAL
Ctenacanthus
USNM V4886 L. Cox
United States, Iowa
USNM:PAL
Ctenacanthus gradocostatus St.John & Worthen
USNM V14171 O. St.John
United States, Iowa
USNM:PAL
Ctenacanthus xiphias (St.John & Worthen)
USNM V14791 O. St.John
United States, Iowa
USNM:PAL
Ctenacanthus keokuk St.John & Worthen
USNM PAL369919 G. Williams
United States, Missouri
USNM:PAL
Phoebodus incurvus Newberry & Worthen
USNM V14053 O. St.John 1881-00-00
United States, Illinois
USNM:PAL
Ctenacanthus
USNM PAL328558 F. Springer 1872-00-00
United States, Iowa
USNM:PAL
Ctenacanthus xiphias (St.John & Worthen)
USNM V14183 L. Cox
United States, Iowa
USNM:PAL
Ctenacanthus acutus Eastman
USNM V4682 L. Cox
United States, Iowa
USNM:PAL
Ctenacanthus excavatus St.John & Worthen
USNM V14175 L. Cox
United States, Iowa
USNM:PAL
Ctenacanthus gracillimus Newberry & Worthen
USNM V16036 O. St.John
United States, Missouri
USNM:PAL
Ctenacanthus decussatus Eastman
USNM V4846 L. Cox
United States, Iowa, Marshall County
USNM:PAL
Phoebodus sophiae St.John & Worthen
USNM V13192 O. St.John 1860-00-00
United States, Iowa
USNM:PAL
Ctenacanthus
USNM V14518 C. Bronaugh
United States, Oklahoma, Craig County
USNM:PAL
Ctenacanthus mayi Newberry & Worthen
USNM V16030 F. Springer
United States, Iowa
USNM:PAL
Ctenacanthus gracillimus Newberry & Worthen
USNM V16035 O. St.John
United States, Missouri
USNM:PAL
Ctenacanthus mayi Newberry & Worthen
USNM V14184 O. St.John 1868-00-00
United States, Iowa, Louisa County
USNM:PAL
Ctenacanthus buttersi St.John & Worthen
USNM V16033 A. Butters
United States, Illinois
USNM:PAL
Ctenacanthus
USNM V13821 J. Johnson 1934-00-00
United States, Colorado, Fremont County
USNM:PAL
Ctenacanthus randalli Newberry
USNM V16038 F. Randall
United States, Pennsylvania
USNM:PAL
Phoebodus springeri (St.John & Worthen)
USNM V14250 F. Springer 1871-06-26
United States, Iowa, Des Moines County
USNM:PAL
Ctenacanthus xiphias (St.John & Worthen)
USNM V3391 L. Cox
United States, Iowa
USNM:PAL
Ctenacanthus
USNM PAL328561
United States, Ohio, Medina County
USNM:PAL
Ctenacanthus burlingtonensis St.John & Worthen
USNM V13524 F. Springer
United States, Iowa, Louisa County
USNM:PAL
Ctenacanthus venustus Eastman
USNM V4684 L. Cox
United States, Iowa
USNM:PAL
Phoebodus mcisaacsii (St.John & Worthen)
USNM PAL328567 O. St.John 1862-00-00
United States, Iowa
USNM:PAL
Ctenacanthus buttersi St.John & Worthen
USNM V16034 A. Butters
United States, Illinois
USNM:PAL
Ctenacanthus
USNM PAL328556 F. Springer
United States, Iowa
USNM:PAL
Ctenacanthus pugiunculus St.John & Worthen
USNM V13525
United States, Missouri
USNM:PAL
Ctenacanthus longinodosus Eastman
USNM V3393 L. Cox
United States, Iowa, Marshall County
USNM:PAL
Ctenacanthus coxianus St.John & Worthen
USNM V13502 L. Cox
United States, Iowa
USNM:PAL
Ctenacanthus randalli Newberry
USNM V16039 F. Randall
United States, Pennsylvania
USNM:PAL
Ctenacanthus solidus Eastman
USNM V3383 J. McCabe 1897-00-00
United States, Iowa, Marshall County
USNM:PAL
Ctenacanthus solidus Eastman
USNM V4843 1897-00-00
United States, Iowa, Marshall County
USNM:PAL
Ctenacanthus
USNM PAL328557 G. Hambach
United States, Missouri
USNM:PAL
Ctenacanthus
USNM PAL235438 J. Smedley 1951-00-00
United States, Wyoming, Lincoln County
USNM:PAL
Ctenacanthus
USNM PAL328562 C. Wachsmuth 1871-00-00
United States, Iowa, Des Moines County
USNM:PAL
Ctenacanthus
USNM PAL328559 E. Teller
United States, Wisconsin
USNM:PAL
Ctenacanthus gracillimus Newberry & Worthen
USNM V8375 G. Hambach
United States, Missouri
USNM:PAL
Phoebodus springeri (St.John & Worthen)
USNM V14249 O. St.John
United States, Iowa, Des Moines County
USNM:PAL
Ctenacanthus harrisoni St.John & Worthen
USNM V13505 G. Harrison
United States, Illinois
USNM:PAL
Ctenacanthus
USNM V10775 G. Hambach
United States, Illinois
USNM:PAL
Ctenacanthus
USNM V10777 L. Cox
United States, Iowa
USNM:PAL
Ctenacanthus
USNM V13823 J. Johnson
United States, Colorado, Fremont County
USNM:PAL
Ctenacanthus speciosus St.John & Worthen
USNM V16024 O. St.John
United States, Iowa
USNM:PAL
Ctenacanthus sculptus St.John & Worthen
USNM V6048 G. Hambach
United States, Missouri
USNM:PAL
Ctenacanthus
USNM PAL328564 O. St.John
United States, Illinois, Warren County
USNM:PAL
Ctenacanthus sculptus St.John & Worthen
USNM V13520 C. Wachsmuth
United States, Iowa
USNM:PAL
Ctenacanthus bellulus (St.John & Worthen)
USNM V14123 O. St.John 1869-00-00
United States, Iowa
USNM:PAL
Ctenacanthus
USNM V14713 F. Springer 1869-00-00
United States, Iowa
USNM:PAL
Ctenacanthus consimilis (St.John & Worthen)
USNM V16029 O. St.John
United States, Illinois
USNM:PAL
Ctenacanthus
USNM V4627 R. Lacoe
Belgium
USNM:PAL
Ctenacanthus
USNM V4690 L. Cox
United States, Iowa, Marshall County
USNM:PAL
Ctenacanthus burlingtonensis St.John & Worthen
USNM PAL328563 O. St.John 1867-00-00
United States, Iowa, Louisa County
USNM:PAL
Ctenacanthus wortheni (Newberry)
USNM V16032 O. St.John
United States, Iowa
USNM:PAL
Ctenacanthus speciosus St.John & Worthen
USNM V16025 O. St.John
United States, Iowa
USNM:PAL
Ctenacanthus venustus Eastman
USNM V3381 Cox & McCabe
United States, Iowa, Marshall County
USNM:PAL
Ctenacanthus
USNM PAL328555 F. Springer
United States, Iowa, Des Moines County
USNM:PAL
Ctenacanthus hyboides
USNM PAL328571
England, Lancashire
USNM:PAL
Ctenacanthus similis St.John & Worthen
USNM PAL328566 O. St.John
United States, Illinois
USNM:PAL
Ctenacanthus speciosus St.John & Worthen
USNM V13518 C. Wachsmuth
United States, Iowa
USNM:PAL
Ctenacanthus
USNM V3480 L. Cox
United States, Iowa
USNM:PAL
Ctenacanthus
USNM V14712 F. Randall
United States, Pennsylvania
USNM:PAL
Tamiobatis vetustus Eastman
USNM V1717
United States, Kentucky, Powell County
USNM:PAL
Ctenacanthus lucasi Eastman
USNM V4844 L. Cox 1897-00-00
United States, Iowa, Marshall County
USNM:PAL
Ctenacanthus
USNM PAL328560 F. Springer
United States, Kentucky, Fleming County
USNM:PAL
Ctenacanthus spectabilis St.John & Worthen
USNM V4845 L. Cox
United States, Iowa, Marshall County
USNM:PAL
Ctenacanthus randalli Newberry
USNM PAL325261 D. White 1896-07-16
United States, Ohio
USNM:PAL
Ctenacanthus gracillimus Newberry & Worthen
USNM V8101 G. Hambach
United States, Missouri
USNM:PAL
Ctenacanthus
USNM PAL235388 J. Smedley 1950-00-00
United States, Wyoming, Sublette County
USNM:PAL
Ctenacanthus aequicostatus (St.John & Worthen)
USNM PAL328565 O. St.John 1868-00-00
United States, Iowa, Louisa County
USNM:PAL
Ctenacanthus burlingtonensis St.John & Worthen
USNM V14715 F. Springer
United States, Iowa
USNM:PAL
Ctenacanthus
USNM PAL235387 J. Smedley 1951-00-00
United States, Wyoming, Teton County
USNM:PAL
Ctenacanthus burlingtonensis St.John & Worthen
USNM PAL328569 F. Springer
United States, Iowa, Des Moines County
USNM:PAL
Ctenacanthus burlingtonensis St.John & Worthen
USNM V14788 F. Springer
United States, Iowa
USNM:PAL
Ctenacanthus excavatus St.John & Worthen
USNM V16037 F. Springer
United States, Iowa
USNM:PAL
Amelacanthus
USNM PAL412150 G. Billingsley 1984-00-00
United States, Arizona, Coconino County
USNM:PAL
Ctenacanthus maximus De Koninck
USNM V4634 R. Lacoe
Belgium
USNM:PAL
Phoebodus
USNM PAL444160 C. Wachsmuth 1872-00-00
United States, Iowa, Des Moines County