Beartooth Butte Formation

Geology
Age range: base of the Lochkovian to the top of the Emsian or 419.62000 to 393.47000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Lochkovian419.62 - 413.02USA (Wyoming) (153534)
Early/Lower Devonian419.62 - 393.47USA (Wyoming) (26179)
Emsian410.62 - 393.47USA (Wyoming) (26176 29292 29294 31000)