Eutrephoceras campbelli (Meek, 1861)

Remarks

• Collector:    Bill Jolley

• Formation:  Austin Group, Jonah Limestone

• Location:     Williamson County, TX

General Info

Synonyms (older names and misidentifications in the literature)

• 1861 Nautilus campbelli Meek
• 1861 Nautilus clementinus Blanford
• 1958 Eutrephoceras campbelli (Meek); Young and Marks

Stratigraphic Occurrence

• Upper Austin Group, Jonah Formation of North–Central Texas
• Upper Austin Group, Dessau Formation of Central Texas

Age

• Eutrephoceras campbelli (Meek) ranges from the Texanites (Texanites) gallicus Collignon zone to the Submortoniceras tequesquitensis Young zone, Middle Santonian Stage (~85–84 mya).

Geographic Occurrence (not an all-inclusive list)

• Bell County, TX
• Travis County, TX
• Williamson County, TX

Remarks

         For identification and descriptions, see:

• Meek, F. B.  1860.  Systematic Catalogue, with Synonymy, of Jurassic, Cretaceous, and Tertiary Fossils Collected in Nebraska, by the Exploring Expeditions Under the Command of Lieutenant G. K. Warren, of the United States Topographical Engineers.  Proceedings of the Academy of Natural Science of Philadelphia 12, 417–432.