Lebo Member

Lebo Member
Lebo Member
Stratigraphic range: Paleogene
Type	Member
Unit of	Fort Union Formation
Underlies	Tongue River Member
Overlies	Tullock Member
Thickness	500–1,700 feet (150–520 m)
Lithology
Primary	Shale, mudstone
Other	Sandstone, siltstone, coal
Location
Region	Montana, Wyoming
Country	United States
Type section
Named for	Lebo creek, Montana

The Lebo Member is a geologic member of the Fort Union Formation in Montana and Wyoming.^[2] It preserves fossils dating back to the Paleogene period.^[3]

References

^ Law, B.E. (1975). "Isopach map of the Lebo Shale Member, Fort Union Formation" (PDF). Open File Report. doi:10.3133/ofr76176. Retrieved 2025-06-02.
^ N. M. Denson; J. H. Dover; L. M. Osmonson (1978). "Lower Tertiary coal bed distribution and coal resources of the Reno Junction-Antelope Creek area, Campbell, Converse, Niobrara, and Weston counties, Wyoming". Miscellaneous Field Studies Map. 960. doi:10.3133/MF960. Wikidata Q62118849.
^ Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.

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