Pennsylvanian period
Upper Carboniferous
Pennsylvanian
Upper Carboniferous period
Carboniferous period
Carboniferous
Oligocene
Calymmian
Siderian
Statherian
Ectasian
Jurassic period
Jurassic
Rhyacian
Pliocene
Pliocene epoch
Orosirian
Triassic period
Triassic
pliothermic
Stenian
Eocene
Westphalian
Phanerozoic aeon
Phanerozoic
carboniferous
Phanerozoic eon
Age of Man
Tonian
Quaternary
Quaternary period
Paleozoic era
Paleozoic
paleoecosystem
paleoswamp
Mississippian
Missippian period
Lower Carboniferous period
Lower Carboniferous
palaeoclimatology
Pleistocenic
Paleogene
paleoclimatology
palaeothermometry
Paleolithic
Pleistocene
1530s
Stennian
hyperthermal
Ypresian
Silurian
Silurian period
Triassic-Jurassic extinction event
Tithonian
tertiary
Pleistocene epoch
Paleocene
Permian period
Thanetian
archicontinent
pliothermal
Embrian
Tertiary
Danian
Permian
Glacial epoch
Tertiary period
Selandian
Eocene epoch
Devonian
allochronic
Miocene
Laramide
Neoarchean
epochwise
Mesolithic Age
Epipaleolithic
Mesolithic
paleoweather
Santonian
paleorainfall
Bartonian
Priabonian
millennian
Paleogenic
Lutetian
lower boundary
anthropocenic
millennial
Cryogenian
pre-Nectarian