Scientific Earth Drilling Information Service - SEDIS
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Lower Triassic
BT
Chronostratigraphic Units
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Phanerozoic
..
Mesozoic
...
Triassic
....
Lower Triassic
NT
Indunian
Olenekian
Bunter
Dinwoody Formation
Panchet Series
Permian-Triassic boundary
Scythian
Serebryanka Formation
Smithian
Spathian
Thaynes Formation
Werfenian
RT
Middle Triassic
Upper Triassic
Hercynian Orogeny
Cordevolian
Goose Egg Formation
Ivishak Formation
Sadlerochit Group