Linked from

The 89 pages that link to Geologic time scale, each with the reason it gives.

• FossilRelated: Fossils help define and correlate many divisions of geological time.

• PaleontologyRelated: Provides the chronological framework for locating ancient organisms in Earth's history.

• PleistoceneNarrower topic: The Pleistocene is one named interval in this hierarchy.

• Radiometric datingRelated: Radiometric measurements calibrate many boundaries and durations in the scale.

• Half-lifeRelated: Long-lived radionuclides provide clocks for dating ancient rocks and calibrating geological history.

• CretaceousNarrower topic: It locates the Cretaceous within Earth's broader chronology.

• Fossil recordRelated: It organizes fossil succession into named intervals of Earth history.

• MioceneNarrower topic: It places the Miocene within the hierarchy of geological time.

• Molecular clockRelated: Geological events can independently constrain the dates used to calibrate divergences.

• EoceneNarrower topic: It places the Eocene within the Cenozoic and defines its boundaries.

• BiostratigraphyRelated: Fossil succession helps define and correlate many units on this scale.

• AnthropoceneNarrower topic: The Anthropocene debate tests how stratigraphic evidence can justify a new formal division of Earth history.

• PermianNarrower topic: The Permian is one named interval within this hierarchy.

• TriassicNarrower topic: It places the Triassic between the Permian and Jurassic within Earth's chronology.

• PaleobiologyRelated: It places fossil organisms and evolutionary events in time.

• DevonianNarrower topic: The Devonian is one period within this larger chronology.

• CarboniferousNarrower topic: It locates the Carboniferous among the intervals used to organize Earth’s history.

• GeochronologyNarrower topic: Geochronological dates anchor the boundaries and durations of its divisions.

• MesozoicNarrower topic: It places the Mesozoic between the Paleozoic and Cenozoic.

• PaleozoicNarrower topic: It places the Paleozoic within the larger chronology of Earth history.

• Uranium–lead datingRelated: Uranium–lead dates help anchor boundaries and events deep in Earth's history.

• Late CretaceousRelated: Its hierarchy places the Late Cretaceous within the Cretaceous Period.

• CenozoicNarrower topic: The Cenozoic is one era within this larger chronology.

• PaleobiogeographyRelated: Its intervals organize distribution changes into comparable stretches of deep time.

• ArcheanNarrower topic: The Archean is one eon in this framework, between the Hadean and Proterozoic.

• ChronologyRelated: It organizes geological events across billions of years.

• PlioceneNarrower topic: The Pliocene is one epoch within this hierarchy of geological time.

• JurassicNarrower topic: The Jurassic is one period within this hierarchy.

• SilurianNarrower topic: The Silurian is one period within this hierarchy.

• OligoceneNarrower topic: It locates the Oligocene among Earth’s formally named intervals.

• Sedimentary basinNarrower topic: Basin development and sediment accumulation are reconstructed across geologic time.

• PaleoceneNarrower topic: It places the Paleocene within the hierarchy of geological time.

• Early CretaceousNarrower topic: It defines the Early Cretaceous as a formal interval of Earth history.

• Late TriassicNarrower topic: It places the Late Triassic within the Mesozoic Era and Triassic Period.

• GradualismRelated: It gives gradual geological change the vast timescale needed to accumulate.

• CambrianNarrower topic: The Cambrian is one named period within this hierarchy of geological time.

• GeologyRelated: It organizes geological events across billions of years.

• PeriodizationCompared with: Its evidence-based formal boundaries offer a contrast with interpretive historical periods.

• PrecambrianNarrower topic: It places the Precambrian within the same framework as the Phanerozoic.

• Deep timeRelated: Its hierarchy makes immense durations and major transitions easier to organize.

• International Commission on StratigraphyNarrower topic: The commission’s work concerns the internationally standardized version of this system.

• NeogeneNarrower topic: It situates the Neogene among periods, epochs, and larger divisions.

• OrdovicianNarrower topic: The Ordovician is one period in this nested chronology.

• Structural geologyRelated: Timing structures against rock ages helps reconstruct the sequence of deformation.

• Vertebrate paleontologyRelated: It supplies the time framework for describing when vertebrate groups appeared and disappeared.

• K–Pg boundaryNarrower topic: The boundary’s age and placement anchor the transition between two geological periods.

• Age of EarthRelated: It divides Earth’s 4.54-billion-year history into named intervals rather than measuring its total age.

• Great Rift ValleyRelated: It places the rift’s development within the long history of African tectonics.

• Index fossilNarrower topic: Index fossils help define and recognize intervals on this timescale.

• Relative datingNarrower topic: Relative dating underpins the ordering of the scale's major divisions.