Remarks

• Collector:    Gerardo Perez Reveles

• Formation:  Tornillo Group, San Carlos Formation

• Location:     Chihuahua, México

General Info

Synonyms (older names and misidentifications in the literature)

• 1941 Fusus ? robertsi Stephenson

Stratigraphic Occurrence

• Navarro Group, Nacatoch Sand of north Texas

• Tornillo Group, San Carlos Formation of Chihuahua, Mexico

Age

• Fusus robertsi Stephenson ranges from approximately the very Late Campanian Stage to the Early Maastrichtian (~72-70 mya).

Geographic Occurrence (not an all-inclusive list)

• Chihuahua, Mexico

• Kaufman County, Texas

Remarks

         For identification and descriptions, see:

• Stephenson, L. W.  1941.  The Larger Invertebrate Fossils of the Navarro Group of Texas (Exclusive of Corals and Crustaceans, and Exclusive of the Fauna of the Escondido Formation).  University of Texas Bulletin 4101, 334–335; plate 64, fig's 15 & 16.