The three authors research surface archaeological records dominated by low-density
scatters and isolated artifacts, archaeological phenomena frequently encountered during …

The transition from the Eocene to the Oligocene epoch, occurring approximately 47 to 30
million years ago, was the most dramatic episode of climatic and biotic change since the …

Cenozoic strata on the Great Plains are the products of a longlived, continental sediment
routing system, and yet strikingly little is known about these ancient rivers. This article details …

The Big Cottonwood Creek Member is a newly recognized lithostratigraphic unit of the
Chadron Formation of northwestern Nebraska. I measured 23 superimposed paleosol …

This contribution reviews the worldwide record of canid and canid-like (creodont and
hyaenid) fossil footprints, the taxonomy of this type of footprints, and reports a new record of …

Lithologic correlations between type areas of the White River Group in Nebraska and South
Dakota have resulted in a revised lithostratigraphy for the lower part of the White River …

There are few descriptions of pre‐Quaternary tufa or travertine, yet these deposits have
important climatic, hydrological and tectonic implications. In the Badlands of South Dakota …

Based on detailed lithologic correlations of the White River Group in Nebraska and South
Dakota, we revise and redescribe the Chadron Formation. We redescribe the upper two …

A review of Cenozoic vertebrate ichnology may serve as a starting point for in-depth
ichnologic analyses, literature compilations, and evaluation of the biologic, ethologic, and …

Detrital zircon ages for tuffaceous sandstones and conglomerates of the White River Group
provide insights on Paleogene basin evolution, magmatic activity, and paleodrainage …