Where: Madison County, Montana (45.2° N, 112.0° W: paleocoordinates 45.6° N, 110.3° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Sixmile Creek Formation, Hemphillian (10.3 - 4.9 Ma)

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Primary reference: W. D. Kuenzi and R. W. Fields. 1971. Tertiary Stratigraphy, Structure, and Geologic History, Jefferson Basin, Montana. Geological Society America Bulletin 82(12):3373-3394 [J. Alroy/J. Alroy/J. Marcot]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 19003: authorized by John Alroy, entered by John Alroy on 15.05.2002

Creative Commons license: CC BY (attribution)