Paleogeography of Southwestern North America List

78 Total time slices

Present00 Ma
Pleistocene021 Ka
Pliocene2 Ma5 Ma
Miocene10 Ma15 Ma20 Ma
Oligocene25 Ma30 Ma
Eocene35 Ma40 Ma45 Ma50 Ma55 Ma
Paleocene60 Ma
Cretaceous-Paleocene65 Ma
Cretaceous (Late)70 Ma72 Ma75 Ma80 Ma83 Ma
Cretaceous (Middle)85 Ma88 Ma90 Ma93 Ma95 Ma
Cretaceous (Early)98 Ma100 Ma110 Ma120 Ma125 Ma
Cretaceous (Early)140 Ma
Jurassic (Late)148 Ma150 Ma153 Ma156 Ma161 Ma
Jurassic (Middle)165 Ma170 Ma175 Ma180 Ma185 Ma
Jurassic (Early)195 Ma197 Ma
Triassic-Jurassic200 Ma
Triassic (Late)220 Ma207 Ma210 Ma215 Ma
Triassic (Early)225 Ma240 Ma245 Ma
Permian-Triassic250 Ma
Permian (Late)260 Ma270 Ma275 Ma278 Ma280 Ma
Permian (Early)285 Ma290 Ma295 Ma
Pennsylvanian (Late)300 Ma304 Ma307 Ma
Pennsylvanian (Early)312 Ma315 Ma320 Ma
Mississippian325 Ma340 Ma
Devonian370 Ma390 Ma400 Ma
Silurian430 Ma
Ordovician470 Ma
Cambrian505 Ma515 Ma525 Ma
Paleoproterozoic1700 Ma