Alachua Formation

Geology

Members: unnamed (9)

Lithologies: not reported (4), claystone (3), sandstone (1), phosphorite (1)

Paleoenvironments: terrestrial indet. (6), marginal marine indet. (2), pond (1)

Age range: base of the Hemingfordian to the top of the Late/Upper Miocene or 18.50000 to 5.33300 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Miocene23.04 - 5.333USA (Florida) (18540)
Hemingfordian18.5 - 16.3USA (Florida) (18597)
Late/Upper Clarendonian12.5 - 9.4USA (Florida) (18554)
Late/Upper Miocene11.63 - 5.333USA (Florida) (99792 162452)
Hemphillian9.4 - 4.7USA (Florida) (18560 18563 18564 216990)