International Ages

538.8–0 Ma · 102 intervals

International Epochs

538.8–0 Ma · 34 intervals

International Periods

2500–0 Ma · 22 intervals

Calcareous Nannoplankton Zones

201.4–0 Ma · 89 intervals

New Zealand Ages

511.5–0 Ma · 89 intervals

Custom COSUNA

538.8–0.0117 Ma · 84 intervals

North American Land Mammal Ages

66–0.0114 Ma · 19 intervals

International Intervals

4031–0 Ma · 170 intervals

COSUNA

538.8–0 Ma · 62 intervals

International Eras

4031–0 Ma · 10 intervals

International Eons

4031–0 Ma · 3 intervals

Trilobite Zonation - Laurentia

524–484.4 Ma · 25 intervals

Conodont Zonation

486.85–201.4 Ma · 198 intervals

North American Regional

850–0.0114 Ma · 95 intervals

Ammonite Zonation - Boreal

252.4–97.5 Ma · 154 intervals

Ammonite Zonation - Western Interior

100.25–68.69 Ma · 70 intervals

International Intervals Covering All Time

4031–0 Ma · 16 intervals

Scotese Reconstruction

113.2–0 Ma · 17 intervals

Geomagnetic Polarity Chron

170.76–0 Ma · 101 intervals

Geomagnetic Polarity Subchron

170.76–0 Ma · 372 intervals

Planktic Foraminiferal Primary Biozones

65–0 Ma · 51 intervals

Planktic Foraminiferal Secondary Biozones

40.8–0 Ma · 39 intervals

Planktic Foraminiferal Datums

59.24–56.3 Ma · 2 intervals

Martian Periods

4600–0 Ma · 4 intervals

Martian Epochs

4180–0 Ma · 8 intervals

Cretaceous Planktic Foraminifer Zonations

141.6–65 Ma · 31 intervals

Low Latitude Radiolarian Zonation

60.2–0 Ma · 34 intervals

Neogene North Pacific Diatom Biochronology

24–0 Ma · 11 intervals

Neogene North Pacific Diatom Biochronology Subzones

24–0 Ma · 22 intervals

Siberian Regional

600–297 Ma · 22 intervals

Australian Regional

511.5–433 Ma · 21 intervals

Western Europe Regional

362–274.37 Ma · 21 intervals

Russian Platform Regional Stages

360–251.902 Ma · 51 intervals

Russian Precambrian Eras

3200–600 Ma · 8 intervals

Russian Precambrian Eons

4031–600 Ma · 4 intervals

Russian Epochs

600–0 Ma · 36 intervals

Russian Stages

538.8–0.0117 Ma · 97 intervals

37 of 37 rows

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