Introduction to special issues: Paleontology and stratigraphy of Laramide strata in the Denver BasinDOI: info:10.2113/gsrocky.37.2.103v. 37No. 2103–103
Johnson, Kirk R. and Raynolds, Robert G. 2002. "Introduction to special issues: Paleontology and stratigraphy of Laramide strata in the Denver Basin." Rocky Mountain Geology, 37, (2) 103–103. https://doi.org/10.2113/gsrocky.37.2.103.