Sharon Springs Member

Geology

Group: Montana

Formation: Pierre Shale

Lithologies: not reported (11), "shale" (19), "limestone" (2)

Paleoenvironments: marine indet. (18), offshore (4), deep-water indet. (9)

Age range: base of the Middle Campanian to the top of the Campanian or 83.50000 to 72.10000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Campanian83.6 - 72.1USA (Kansas) (71829 106060)
Campanian83.6 - 72.1USA (South Dakota) (101100 107642 107674)
Campanian83.6 - 72.1USA (Wyoming) (1743 1742)
Early/Lower Campanian83.5 - 70.6USA (Wyoming) (77348 94650 117858 117859)
Early/Lower Campanian83.5 - 70.6USA (South Dakota) (94635 94636 94638 94639 94641 94644 94645 94647)
Early/Lower Campanian - Middle Campanian83.5 - 70.6USA (Nebraska) (116621)
Early/Lower Campanian - Middle Campanian83.5 - 70.6USA (Wyoming) (77312)
Early/Lower Campanian - Middle Campanian83.5 - 70.6USA (South Dakota) (77316 102092 107676 117861)
Early/Lower Campanian - Middle Campanian83.5 - 70.6USA (Kansas) (77321 114240)
Middle Campanian83.5 - 70.6USA (South Dakota) (85236 94640)
Middle Campanian83.5 - 70.6USA (Kansas) (25692 49039 132509 136267)
Middle Campanian83.5 - 70.6USA (Wyoming) (117860 233170)