PALEOZOIC ERA
DEVONIAN PERIOD
CARBONIFEROUS PERIOD
LOWER CARBONIFEROUS
PERMIAN PERIOD
EARLY PERMIAN
ROTLIGENDES EPOCH
ZECHSTEIN EPOCH
LOPINGIAN SUBEPOCH
MESOZOIC ERA
TRIASSIC PERIOD
LOWER TRIASSIC
SCYTHIAN EPOCH (EARLY TRIASSIC)
MIDDLE TRIASSIC
MID TRIASSIC EPOCH
LATE TRIASSIC
LATE TRIASSIC EPOCH
JURASSIC PERIODEARLY JURASSIC
LIAS EPOCH
MIDDLE JURASSIC
DOGGER EPOCH
LATE JURASSIC
MALM EPOCH
CRETACEOUS PERIOD
EARLY CRETACEOUS
EARLY CRETACEOUS EPOCH
NEOCOMIAN SUBEPOCH
GALLIC SUBEPOCH
GULF EPOCHGALLIC SUBEPOCH
MIDDLE CRETACEOUS
LATE CRETACEOUS
SENONIAN SUBEPOCH
CENOZOIC ERA
TERTIARY SUBERA
PALEOGENE PERIOD
NEOGENE PERIOD
QUATERNARY SUBERA