“…Previous fieldwork primarily targeted microvertebrate fossils from three areas in the southern Wind River Basin and southwestern and southeastern Bighorn Basin. Published results feature mammals (Clemens & Lillegraven, 1986;Lillegraven & McKenna, 1986), chondrichthyans (Case, 1987, dinosaurs (Yun & Funston, 2021), and general faunal overviews (DeMar & Breithaupt, 2006. This work has assigned a "Judithian" North American Land Mammal Age to the assemblages, of middle and late Campanian ages (Clemens & Lillegraven, 1986;DeMar & Breithaupt, 2006.…”