Where: Grant County, Oregon (44.8° N, 119.6° W: paleocoordinates 44.5° N, 110.6° W)

• coordinate based on nearby landmark

When: Kimberly Member (John Day Formation), late Early Arikareean (29.5 - 18.5 Ma)

• "LACM 480 came from gray tuffaceous sandstone of the Kimberly Mem- ber along Rudio Creek a short distance above a supposed correlative ash of the Deep Creek tuff, dated elsewhere at ,27.9 Ma. If this age for the Rudio Creek ash is correct, it would appear to be a much older carnivore than T. ferox, which is a smaller and possibly much younger species, and in this case an ancestor- descendant relationship would be unlikely. However, if the correlative ash along Rudio Creek, identified by Fisher (Fisher and Rensberger, 1972: 14) as the Deep Creek tuff in fact represents a much younger undated ash-fall event, then the relative ages of R. amplidens and T. ferox are unspecified."

Environment/lithology: terrestrial; tuffaceous, gray sandstone

Size class: macrofossils

Primary reference: R. M. Hunt, Jr. 2011. Evolution of Large Carnivores During the Mid-Cenozoic of North America: The Temnocyonine Radiation (Mammalia, Amphicyonidae). Bulletin of the American Museum of Natural History 358:1-153 [J. Marcot/J. Marcot]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 160727: authorized by Jonathan Marcot, entered by Jonathan Marcot on 27.08.2014

Creative Commons license: CC BY (attribution)