Difunta Group

Geology

Formations: unnamed (3), Adjuntas (3), Cerro Huerta (1), Cerro del Pueblo (81), Las Encinas (1), Muerto (2), Potrerillos (3), Rancho Nuevo (2), Tanque (1)

Lithologies: not reported (44), "siliciclastic" (3), mudstone (25), "shale" (4), siltstone (2), sandstone (22), breccia (1), grainstone (1), "limestone" (1)

Paleoenvironments: marine indet. (5), terrestrial indet. (49), marginal marine indet. (5), estuary/bay (17), lagoonal (1), delta plain (7), deltaic indet. (1), shoreface (1), basinal (siliciclastic) (1), "channel" (1), fluvial-lacustrine indet. (2), fluvial-deltaic indet. (3), pond (1), lacustrine deltaic indet. (1), lacustrine indet. (2)

Age range: base of the Late/Upper Campanian to the top of the Ypresian or 83.60000 to 48.07000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Late/Upper Campanian83.6 - 72.2Mexico (Coahuila) (24257 24258 24259 24260 24261 32224 35360 51545 55245 55327 59114 68039 69910 69911 76743 76745 79607 79608 79609 79610 79611 79612 79613 79614 79615 79616 79617 79618 79619 79620 92116 119500 187323 136544 171004 149735 149737 149738 149739 154161 154244 170943 170997 170998 171000 171001 171002 171003 179648 179649 179650 179651 193563 193564 193565 193566 193567 220778 226325 226537 227154 227155 227157 227158 227160 227171 227173 227174 227175 227243 227244 227245 227246 227247 227248 227249 227250 227251 227252 227253 231026)
Late/Upper Campanian - Late/Upper Maastrichtian83.6 - 66.0Mexico (Coahuila) (227172)
Late/Upper Campanian - Maastrichtian83.6 - 66.0Mexico (Coahuila) (92297 149734 226354)
Early/Lower Maastrichtian72.2 - 66.0Mexico (Coahuila) (97757 233862)
Late/Upper Maastrichtian72.2 - 66.0Mexico (Coahuila) (79606)
Maastrichtian72.2 - 66.0Mexico (Coahuila) (51546 87252)
Early/Lower Paleocene66.0 - 61.66Mexico (Coahuila) (42469 42470 42471)
Early/Lower Paleocene66.0 - 61.66Mexico (Nuevo Leon) (42468)
Ypresian56.0 - 48.07Mexico (Nuevo Leon) (41751 41752 41753)