Carboniferous
Carboniferous period
Paleozoic era
Paleozoic
Mesozoic
Mesozoic era
Age of Reptiles
Siderian
Pennsylvanian
Upper Carboniferous
Upper Carboniferous period
Pennsylvanian period
Quaternary period
Age of Man
Quaternary
Jurassic period
Jurassic
Tertiary
Tertiary period
Phanerozoic aeon
Phanerozoic
Phanerozoic eon
Permian
Triassic
Triassic period
Permian period
Eocene
millennial
millennian
kya
Holocene
Recent epoch
Holocene epoch
Statherian
Recent
Calymmian
Rhyacian
Orosirian
1530s
Ediacaran
period
Hettangian
Guadalupian
Ectasian
Tonian
Devonian
millenary
millennium
Cryogenian
C17
Silurian period
Cenozoic
Paleolithic
postpaleolithic
Age of Mammals
Ypresian
Silurian
Cenozoic era
Mesolithic
Mesolithic Age
quadringentenary
Eocene epoch
C15
Epipaleolithic
paleodata
1830s
Archaeozoic
Eratosthenian
pre-Nectarian
Nectarian
Mississippian
Missippian period
paleochronology
neolithic
Lower Carboniferous
Lower Carboniferous period
Paleogene
Embrian
submillennial
Cambrian period
Cambrian
New Stone Age
century
Stenian
Thanetian
yearthousand
Permian-Triassic extinction
Danian
Selandian
dawn
Stennian
Oligocene
Triassic-Jurassic extinction event