Squalicorax falcatus (Agassiz, 1833–1843)

Remarks

• Collector:    Brent Buemi

• Formation:  Eagle Ford Group, Arcadia Park Shale, Kamp Ranch Member

• Location:     Dallas County, TX

General Info

Synonyms (older names and misidentifications in the literature)

• "Crow Sharks" (extinct group)

• 1833–1843 Corax falcatus Agassiz

• 1852 Oxyrhina zippei? Agassiz; Gervais

• 1852 Corax appendiculatus Agassiz; Gervais

• 1873 Galeocerdo falcatus (Agassiz); Leidy

• 1900 Corax falcatus Agassis; Williston

• 1902 Corax falcatus Agassiz; Woodward

• 1911 Corax falcatus Agassiz;Kümmel

• 1911 Corax falcatus Agassiz;Woodward

• 1927 Corax baharijensis Stromer

• 1935 Corax falcatus Agassiz; Dalinkevicius

• 1936 Corax falcatus Agassiz; Leriche

• 1953 Anacorax falcatus (Agassiz); Dartevelle & Casier

• 1959 Anacorax falcatus (Agassiz); Dartevelle & Casier

• 1964 Palaeocorax falcatus (Agassiz); Glückman

• 1967 Squalicorax falcatus (Agassiz); Case

• 1969 Squalicorax falcatus (Agassiz); Bilelo

• 1970 Squalicorax falcatus (Agassiz); Applegate

• 1973 Squalicorax falcatus (Agassiz); Cappetta

• 1976 Squalicorax falcatus (Agassiz); Edwards

• 1979 Squalicorax falcatus (Agassiz); Edwards

• 1981 Squalicorax falcatus (Agassiz); Witzke

• 1988 Squalicorax falcatus (Agassiz); Lucas et al.

• 1993 Squalicorax falcatus (Agassiz); Welton & Farish

Stratigraphic Occurrence

• Upper Austin Group (Santonian) of north TX (no fm given)

• Basal Austin Group, basal Atco Chalk (Coniacian) of north TX

• Eagle Ford Grp, Arcadia Park Fm, Kamp Ranch Mbr, north TX

• Upper Woodbine Group of north TX (formation not given)

• Woodbine Group, Pepper Fm of north–central TX

• Benton Group, Carlile Shale of SD

• Upper Chalk (Upper Turonian–Campanian) of England

• Middle Chalk (Cenomanian–middle Turonian) of England

• Lower Chalk (Cenomanian) of England

• Upper Greensand (Cenomanian horizon) of England

• Upper Cenomanian rocks of WY (probably Frontier Fm)

• Benton Group, Carlile Shale of KS

• Benton Group, Carlile Shale of CO

• Benton Group, Carlile Shale of NE

• Upper Cenomanian–Turonian rocks of NM

• Selma Group of MS and AL

Age

• Squalicorax falcatus (Agassiz) occurs in the Cenomanian to the Coniacian (and possibly Santonian) rocks of Texas, according to Williamson et al.  Its range is slightly longer worldwide.

Geographic Occurrence (not an all-inclusive list)

• Africa

• AL (no county given)

• Belgium

• Burlington County, NJ

• CO (no county given)

• Coconino County, AZ

• Dallas County, TX

• Egypt

• England

• Fall River County, SD

• France

• Gloucester County, TX

• Grayson County, TX

• KS (no county given)

• Lithuania

• MS (no county given)

• Monmouth County, NJ  

• Morocco

• Navajo County, AZ

• NE (no county given)

• NM (no county given)

• WY (no county given)

Remarks

       For identification and descriptions, see:

• Cappetta, H.  1987.  "Chondrichthyes II-Mesozoic and Cenozoic Elasmobranchii".  In:  Schultze, H.-P.  Handbook of Paleoichthyology, vol. 3B.  New York:  Gustav Fischer Verlag.

• Williamson, T. E.; Kirkland, J. I.; Lucas, S. G.  1993.  Selachians from the Greenhorn Cyclothem ("Middle" Cretaceous:  Cenomanian–Turonian), Black Mesa, Arizona, and the Paleogeographic Distribution of Late Cretaceous Selachians.  Journal  of  Paleontology  67 (3), 447–474.

        See also:

• Druckenmiller, P. S.; Daun, A. J.; Skulan, J. L.; Pladziewics, J. C.  1993.  Stomach Contents in the Upper Cretaceous Shark Squalicorax falcatus.  Journal of Vertebrate Paleontology 13, 33A.