"Bitter Creek Group; Black Buttes, Wyoming" (White 1876), USA; Lance Fm., Maastrichtian, Late Cretaceous [details]
"Wahsatch group; Black Buttes Station, Wyoming Territory", USA; Lance Fm., Maastrichtian, Late Cretaceous (not ... [details]
"Wahsatch group; Black Buttes Station, Wyoming Territory", USA; Lance Fm., Maastrichtian, Late Cretaceous (not ... [details]
"Church Buttes, Wyoming Territory" (Meek 1871), USA; Bridgerian, early Eocene [details]
"Wahsatch group at Wales, Utah, and also in the Canon of Desolation of Green River in the same Territory", USA; ... [details]
"Wahsatch group; Black Buttes Station, Wyoming Territory", USA; Lance Fm., Maastrichtian, Late Cretaceous (not ... [details]