Also known as Eureka Valley Road (USGS f158; MV 6403)
Where: Gallatin County, Montana (45.9° N, 111.6° W: paleocoordinates 47.7° N, 102.7° W)
• coordinate based on nearby landmark
• local area-level geographic resolution
When: middle Member (Climbing Arrow Formation), Early/Lower Chadronian (37.2 - 33.9 Ma)
• from the "middle white unit"
• member-level stratigraphic resolution
Environment/lithology: terrestrial; siltstone
Size class: macrofossils
Reposited in the USGS
• Rahn Farm and Eureka Valley Road are distinct localities, but collections are lumped by Tabrum et al.
Primary reference: A. R. Tabrum, R. Nichols, and A. D. Barnosky. 2001. Tertiary paleontology of southwest Montana and adjacent Idaho. Museum of the Rockies Occasional Paper 3:93-112 [J. Alroy/J. Alroy/J. Alroy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 27245: authorized by John Alroy, entered by John Alroy on 24.11.2002
Creative Commons license: CC BY (attribution)
Taxonomic list
Mammalia | |
Herpetotherium valens Lambe 1908 marsupial
Copedelphys titanelix Matthew 1903 marsupial | |
| |
Ischyromys douglassi Black 1968 rodent | |
Palaeolagus cf. temnodon Douglass 1902 rabbit | |
Mesohippus sp. Marsh 1875 anchitheriine horse | |
Brontotheriidae indet. Marsh 1873 brontothere | |
"Leptomeryx" cf. yoderi Schlaikjer 1935 ruminant
"Leptomeryx" aff. speciosus Lambe 1908 ruminant | |
Limnenetes platyceps Douglass 1902 oreodont
Merycoidodon sp. Leidy 1848 oreodont | |
Domnina cf. gradata Cope 1873 shrew | |
Oligoryctes cameronensis Hough 1956 placental | |
Micropternodus borealis Matthew 1903 placental | |
Centetodon kuenzii Lillegraven et al. 1981 placental |