El Picacho Formation

El Picacho Formation
Stratigraphic range: Maastrichtian, 72–66 Ma
TypeGeological formation
Location
RegionNorth America

The El Picacho Formation is a geological formation in Texas, United States, whose strata date back to the Late Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation.[1] The paleosols found here are rich in clay, calcite, and rhizoliths which show that during the Cretaceous period, this fossil formation, just like the neighboring Javelina Formation and Aguja Formation, was a fluvial flood plain.[2]

  1. ^ Weishampel, David B; et al. (2004). "Dinosaur distribution (Late Cretaceous, North America)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 574-588. ISBN 0-520-24209-2.
  2. ^ Lehman, Thomas M. (1 February 1989). "Upper Cretaceous (Maastrichtian) paleosols in Trans-Pecos Texas". GSA Bulletin. 101 (2): 188–203. Bibcode:1989GSAB..101..188L. doi:10.1130/0016-7606(1989)101<0188:UCMPIT>2.3.CO;2.