Ages of Chinle Members
The Chinle Formation is aged from early Late Triassic. Age correlation is based on Lucas' Land Vertebrate Faunachrons. The faunachrons are based on first and last appearances of phytosaurs. Simplified stratigraphy based on Litwin.
| Sub-stage | Faunachron | Chinle Member(s) |
|---|---|---|
| Late Norian-Rhaetian | Apachean | Rock Point/Church Rock |
| Early to Middle Norian | Revueltian | Owl Rock
Upper Petrified Forest |
| upper Late Carnian | Adamanian | Sonsela Sandstone
Lower Petrified Forest Moss Back Monitor Butte |
| lower Late Carnian | Otischalkian | Shinarump
Temple Mountain |
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