Richmond Formation

Geology

Members: unnamed (9)

Lithologies: not reported (2), "shale" (6), conglomerate (1), "limestone" (3)

Paleoenvironments: marine indet. (3), carbonate indet. (1), marginal marine indet. (1)

Age range: base of the Ashgill to the top of the Middle Eocene or 449.50000 to 37.71000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Richmondian449.6 - 445.5USA (Illinois) (167613 167615)
Ashgill449.5 - 443.1USA (Michigan) (26306 26308 26309 26310 26331)
Danian66.0 - 61.66Jamaica (226513)
Early/Lower Eocene56.0 - 48.07Jamaica (St. Mary Parish) (77032)
Middle Eocene48.07 - 37.71Jamaica (96452)