aalenian
41Orosirian — The Orosirian (  /ˌɒrɵˈ …
42Norian — System Series Stage Age (Ma) Jurassic Lower Hettangian younger Triassic Upper …
43Piacenzian — System Series Stage Age (Ma) Quaternary Pleistocene Gelasian younger Neogene Pliocene …
44Bajocian — In the geologic timescale, the Bajocian is an age of the Middle Jurassic epoch of the Jurassic period of the Mesozoic era of the Phanerozoic eon. It lasted from approximately 171.6 Ma to around 167.7 Ma (million years ago). The Bajocian age… …
45Messinian — System Series Stage Age (Ma) Quaternary Pleistocene Gelasian younger Neogene Pliocene …
46Maastrichtian — System Series Stage Age (Ma) Paleogene Paleocene Danian younger Cretaceous Upper …
47Middle Pleistocene — Subdivisions of the Quaternary Period System Series Stage Age (Ma) Quaternary Holocene 0–0.0117 Pleistocene Tarantian (Upper) 0.0117–0.126 …
48Danian — System Series Stage Age (Ma) Neogene Miocene Aquitanian younger Paleogene Oligocene …
49Selandian — System Series Stage Age (Ma) Neogene Miocene Aquitanian younger Paleogene Oligocene …
50Chattian — System Series Stage Age (Ma) Neogene Miocene Aquitanian younger Paleogene Oligocene …
