Palaeontology and biostratigraphy of the Middle– Upper Coniacian and Santonian inoceramids of the US Western Interior

The taxonomy of the Middle-Late Coniacian and Santonian inoceramids of the US Western Interior, including some specimens from the Canadian Western Interior, is revised, based mainly on the extensive collections of the US Geological Survey. The classic Meek and Hayden material is discussed. Forty-four species are described of which 5 are new: null Inoceramus americanus , null Inoceramus sokolovi , null Inoceramus robertsoni ,  Inoceramus...