San Sebastian Formation

Geology

Group: Rio Guatemala

Members: unnamed (16)

Lithologies: claystone (12), sandstone (2), coal (2), lignite (6)

Paleoenvironments: unknown

Age range: base of the Oligocene to the top of the Late/Upper Oligocene or 33.90000 to 23.04000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Oligocene - Late/Upper Oligocene33.9 - 23.04Puerto Rico (32291 32282 32283 32284 32285 32286 32287 32288 32289 32290 32292 32293 32294 32295 32297 32299)