Mesaverde Formation, Group

Geology

Formations: unnamed (16), Almond (10), Blackhawk (3), Castlegate (5), Crevasse Canyon (3), Menefee (8), Nelsen (2), Rock Springs (1), Sego Sandstone (1), Toreva (1), Williams Fork (1)

Members: unnamed (28), Bowie Shale (4), Teapot Sandstone (16)

Lithologies: not reported (31), "siliciclastic" (1), mudstone (4), "shale" (2), siltstone (3), sandstone (48), conglomerate (2), coal (6), peat (1), lignite (1)

Paleoenvironments: marine indet. (9), terrestrial indet. (43), coastal indet. (2), estuary/bay (13), fluvial indet. (5), channel lag (1), fine channel fill (1), "channel" (20), crevasse splay (1), mire/swamp (1), fluvial-lacustrine indet. (2), lacustrine indet. (1)

Age range: base of the Santonian to the top of the Paleocene or 86.30000 to 56.00000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Coniacian - Santonian89.8 - 83.6USA (New Mexico) (182494)
Coniacian - Campanian89.8 - 72.1USA (New Mexico) (24182)
Middle Coniacian89.3 - 85.8USA (Arizona) (28001)
Santonian86.3 - 83.6USA (New Mexico) (52051)
Campanian83.6 - 72.1USA (Wyoming) (45861 45863 45865 45866 45867 45868 45869 61848 61849 64642)
Campanian83.6 - 72.1USA (Utah) (48548 52856 71435 71436 86842 188547 223936 223937)
Campanian83.6 - 72.1USA (New Mexico) (150885)
Campanian83.6 - 72.1USA (Colorado) (45872 45873 45874 45875 56639 56641 66908 70050 156034 156036)
Campanian - Maastrichtian83.6 - 66.0USA (Colorado) (56614 56617 56621 189580)
Early/Lower Campanian83.5 - 70.6USA (New Mexico) (78054)
Early/Lower Campanian - Middle Campanian83.5 - 70.6USA (New Mexico) (13000 24924 51983 195787 219262 219263 219763)
Judithian83.5 - 70.6USA (Wyoming) (14431 14433 14438 14439 14440 14441 14442 14443 14444 14458 14465 14469 14473 14477 14478 14479 14480 14486 14487)
Late/Upper Campanian83.5 - 70.6USA (Colorado) (45870 45871 64640 64641)
Late/Upper Campanian83.5 - 70.6USA (Wyoming) (70500 45860 45862 70253 70268 70269 70451 70453 70454 70455 70488 70489 70490 70499 70501 107641 215800 215801 217715 217717 217718 217719 217720 217721 217723)
Late/Upper Campanian83.5 - 70.6USA (Utah) (78178 128462 141916)
Middle Campanian83.5 - 70.6USA (Utah) (161992)
Late/Upper Campanian - Early/Lower Maastrichtian83.5 - 66.0USA (Colorado) (167302)
Paleocene66.0 - 56.0USA (Colorado) (53071)