Final version of the article. A few paragraphs from the discussion were deleted, but it is otherwise the same as v2 as shown here on PeerJ preprints.

Fowler DW (2017) Revised geochronology, correlation, and dinosaur stratigraphic ranges of the Santonian-Maastrichtian (Late Cretaceous) formations of the Western Interior of North America. PLoS ONE 12(11): e0188426. https://doi.org/10.1371/journal.pone.0188426