Squalicorax pristodontus (Agassiz, 1843)

Remarks

• Collector:    Keith Minor

• Formation:  Monmouth Group, Navesink and Mount Laurel Formations

• Location:     Monmouth County, NJ

General Info

Synonyms (older names and misidentifications in the literature)

• "Crow Sharks" (extinct group)  
• 1843 Corax pristodontus Agassiz
• 1896 Corax pristodontus var. plicatus Priem
• 1911 Corax pristodontus Agassiz; Fowler
• 1943 Corax pristodontus Agassiz; Dartevelle and Casier
• 1952 Corax pristodontus Agassiz; Arambourg
• 1967 Squalicorax pristodontus (Agassiz); Case
• 1973 Squalicorax pristodontus (Agassiz); Herman
• 1975 Squalicorax pristodontus (Agassiz); Cappetta and Case
• 1983 Squalicorax pristodontus (Agassiz); Lauginiger and Hartstein
• 1994 Squalicorax pristodontus (Agassiz); Welton and Farish
• 1994 Squalicorax pristodontus (Agassiz); Kent

Stratigraphic Occurrence

• Monmouth Group, Severn Formation of Maryland
• Monmouth Group, Navesink Formation of New Jersey
• Monmouth Group, Mount Laurel Formation of New Jersey and Delaware
• Matawan Group, Wenonah Formation of New Jersey
• Matawan Group, Marshalltown Formation of New Jersey and Delaware (from spoils, so doubtful horizon)
• Midway Group, Littig Formation (Paleocene) of Texas (reworked)
• Navarro Group, Kemp Formation of North Texas
• Navarro Group, Escondido Formation of South Texas
• No reports, but it probably occurs in the basal Navarro Group, Neylandville Formation of North Texas
• Upper Taylor Group, Upper Taylor Marl (Bergstrom/Marlbrook Formation) of North and Central Texas
• Peedee Formation of North Carolina

Age

• Squalicorax pristodontus (Agassiz) is a Maastrichtian/late Campanian age shark that ranges from about the Manambolites ricensis Young zone to the Sphenodiscus pleurisepta (Conrad) zone (~71-65 mya).

Geographic Occurrence (not an all-inclusive list)

• Bell County, TX
• Burlington County, NJ
• Charles County, MD
• Fannin County, TX
• Georgia (county ?)
• Hunt County, TX
• Medina County, TX
• Mercer County, NJ
• Monmouth County, NJ
• Morocco
• New Castle County, DE
• North Carolina
• Travis County, TX

Remarks

       For identification and descriptions, see:

• Kent, B. W.  1994.  Fossil Sharks of the Chesapeake Bay Region.  Columbia, MD:  Egan Rees & Boyer.

• Welton, B. J; Farish, R. F.  1993.  The  Collector’s  Guide  to  Fossil  Sharks  and  Rays  from  the  Cretaceous  of  Texas.  Lewisville:  Before Time.