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02004006008001,0001,2001,4001,6001,8002,0002,2002,4002,6002,8003,0003,2003,4003,6003,8004,000

International Ages

538.8 - 0 Ma

Intervals: 102

International Epochs

538.8 - 0 Ma

Intervals: 34

International Periods

2500 - 0 Ma

Intervals: 22

Calcareous Nannoplankton Zones

201.4 - 0 Ma

Intervals: 88

New Zealand Ages

511.5 - 0 Ma

Intervals: 89

Custom Cosuna

538.8 - 0.0117 Ma

Intervals: 84

North American Land Mammal Ages

66 - 0.0114 Ma

Intervals: 19

International Intervals

4000 - 0 Ma

Intervals: 170

Cosuna

538.8 - 0 Ma

Intervals: 62

International Eras

4000 - 0 Ma

Intervals: 10

International Eons

4000 - 0 Ma

Intervals: 3

Trilobite Zonation - Laurentia

524 - 484.4 Ma

Intervals: 25

Conodont Zonation

485.4 - 201.4 Ma

Intervals: 198

North American Regional

850 - 0.0114 Ma

Intervals: 95

Ammonite Zonation - Boreal

252.4 - 97.5 Ma

Intervals: 154

Ammonite Zonation - Western Interior

100.25 - 68.69 Ma

Intervals: 70

International Intervals Covering All Time

4000 - 0 Ma

Intervals: 16

Scotese Reconstruction

113 - 0 Ma

Intervals: 17

Geomagnetic Polarity Chron

170.76 - 0 Ma

Intervals: 101

Geomagnetic Polarity Subchron

170.76 - 0 Ma

Intervals: 372

Planktic Foraminiferal Primary Biozones

65 - 0 Ma

Intervals: 51

Planktic Foraminiferal Secondary Biozones

40.8 - 0 Ma

Intervals: 39

Planktic Foraminiferal Datums

59.2 - 56.3 Ma

Intervals: 2

Martian Periods

4600 - 0 Ma

Intervals: 4

Martian Epochs

4180 - 0 Ma

Intervals: 8

Cretaceous Planktic Foraminifer Zonations

141.6 - 65 Ma

Intervals: 31

Low Latitude Radiolarian Zonation

60.2 - 0 Ma

Intervals: 34

Neogene North Pacific Diatom Biochronology

24 - 0 Ma

Intervals: 11

Neogene North Pacific Diatom Biochronology Subzones

24 - 0 Ma

Intervals: 22

Siberian Regional

600 - 297 Ma

Intervals: 22

Australian Regional

511.5 - 433 Ma

Intervals: 21

Western Europe Regional

362 - 274.37 Ma

Intervals: 21

Russian Platform Regional Stages

360 - 251.902 Ma

Intervals: 51

Russian Precambrian Eras

3200 - 600 Ma

Intervals: 8

Russian Precambrian Eons

4000 - 600 Ma

Intervals: 4

Russian Epochs

600 - 0 Ma

Intervals: 36

Russian Stages

538.8 - 0.0117 Ma

Intervals: 97