Hanna Formation

Geology

Members: unnamed (2), lower (22), upper (1)

Lithologies: siltstone (1), sandstone (1)

Paleoenvironments: terrestrial indet. (24), deltaic indet. (1)

Age range: base of the Gzhelian to the top of the Late/Upper Eocene or 303.70000 to 33.90000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Gzhelian303.7 - 298.9Norway (38 39 40 41 42 43 44 45 46 47 48)
Torrejonian - Tiffanian63.8 - 56.2USA (Wyoming) (14820 14837 14838 14839 14840 14841 14842 14843 14844 14845 14846 14847 14848 14849 14850 14851 14852 14853 14854 14855 14858)
Tiffanian60.9 - 56.2USA (Wyoming) (14950 55227 220283)
Wasatchian54.9 - 50.5USA (Wyoming) (15944)
Middle Eocene - Late/Upper Eocene48.07 - 33.9Egypt (62459)
Bartonian41.03 - 37.71Egypt (Fayum) (235098)
Bartonian41.03 - 37.71Egypt (96951 124905 226399 234893 234894 234895 239107 239109)
Priabonian37.71 - 33.9Egypt (47934 124990 124992 124993 124994 125000 125001 125002 125004 125010 125015 125020 125022 125023 125026 137542 137543 137545 137546 137547 137548 137549 137550 137551 137552 137553 137569 137570 137574 137575 198761 206021)
Priabonian37.71 - 33.9Egypt (Fayum) (13103 13402 13403 137544 164491)