Merritt Dam Member

Geology

Group: Ogallala

Formation: Ash Hollow

Lithologies: not reported (3), "siliciclastic" (1), sandstone (3)

Paleoenvironments: terrestrial indet. (48), coarse channel fill (1), fine channel fill (1), "channel" (2)

Age range: Clarendonian or 12.50000 to 9.40000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Clarendonian12.5 - 9.4USA (Nebraska) (18028 18037 18042 18047 18048 18053 18054 18059 18095 18099 18135 18142 18143 18145 18171 18202 18214 18218 18226 18227 18228 18229 18231 18245 18246 18257 18277 18291 18302 18321 18322 18333 18336 18366 18378 18410 18425 18446 18447 18457 18458 18467 18468 18496 26565)
Late/Upper Clarendonian12.5 - 9.4USA (Nebraska) (18066 18327 37802 37803)
Clarendonian - Hemphillian12.5 - 4.9USA (Nebraska) (18023 18134 18437)