Hannold Hill Formation

The Hannold Hill Formation is an Early Eocene (Wasatchian) geologic unit in the western United States. It preserves the fossilized remains of the ray Myliobatis and gar.

Fossil content

The following fossils have been reported from the formation:

Glires

• Paramys excavatus

Pantodonta

• Caenolambda jepseni
• Coryphodon armatus
• Coryphodon sp.

Perissodactyla

• Hyracotherium vasacciense
• Minippus index

Placentalia

• Hyopsodus cf. wortmani
• Hyopsodus sp.
• Phenacodus sp.

Primates

• Phenacolemurinae indet.

Wasatchian correlations

References

Bibliography

• Hunt, ReBecca K., Vincent L. Santucci and Jason Kenworthy. 2006. "A preliminary inventory of fossil fish from National Park Service units." in S.G. Lucas, J.A. Spielmann, P.M. Hester, J.P. Kenworthy, and V.L. Santucci (ed.s), Fossils from Federal Lands. New Mexico Museum of Natural History and Science Bulletin 34, pp. 63–69
• J. A. Schiebout and Et al. 1987. Stratigraphy of the Cretaceous-Tertiary and Paleocene-Eocene Transition Rocks of Big Bend National Park, Texas . Journal of Geology 95
• J. A. Wilson. 1967. Early Tertiary mammals. In R. A. Maxwell, J. T. Lonsdale, R. T. Hazzard, & J. A. Wilson (eds.), Geology of Big Bend National Park, Brewster County, Texas. The University of Texas Publication 6711:157-169