The first discovery of a Cretaceous mammal. American Museum novitates ; no. 2285

Abstract

"The first discovery (recognition) of a Cretaceous mammal was that of Meniscoessus conquistus by Wortman in 1882. Its type locality can be restricted to part of Harding County, South Dakota, from newly uncovered correspondence. Mammals of the late Cretaceous Bug Creek facies occur in Wyoming as well as in eastern Montana, and were first collected in 1892"--P. [1].