Ferris Formation

Geology

Members: unnamed (81)

Lithologies: "siliciclastic" (10), mudstone (1), conglomerate (1)

Paleoenvironments: terrestrial indet. (75), fluvial indet. (11), fluvial-lacustrine indet. (1)

Age range: base of the Late/Upper Maastrichtian to the top of the Puercan or 70.60000 to 63.30000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Lancian70.6 - 66.0USA (Wyoming) (14539 14540 14541 14542 14543 14544 14545 70343 75280 75281 75283 75284 75285 75286 75287 75289 75290 75291 75292 75293 75294 75295 75296 75297 75298 75299 75429 75430 75431 75432 75433 75434 75435 75439 75441 75442 75443 75445 75446 75447 165878)
Late/Upper Maastrichtian70.6 - 66.0USA (Wyoming) (52088)
Puercan66.0 - 63.3USA (Wyoming) (14706 14707 14708 14709 14710 14711 14712 14713 14714 14715 14716 14717 14718 14719 14720 14721 14722 14723 14724 14725 14726 14727 14728 14729 14730 14731 14732 14733 14734 14735 14796 14797 75282 75427)
Paleocene66.0 - 56.0USA (Wyoming) (43215 43302 57940 57945 57946 57947 57950 57967 57969 57983 58004)