Where: Benton County, Washington (46.2° N, 119.3° W: paleocoordinates 46.1° N, 116.6° W)
• coordinate stated in text
When: Ringold Formation, Hemphillian to Hemphillian (10.3 - 4.9 Ma)
• Al- though the Ringold specimen could be younger, Tedford et al. (2004:218R) note that Aphelops mutilis first occurs in the Hh2 subage of the Hemphillian North American Land Mammal Age, correlated (their fig. 6.2) as between about 7.5 and 6.8 Ma.
Environment/lithology: terrestrial; fine-grained, brown, yellow, muddy siltstone
Size class: macrofossils
Primary reference: E. P. Gustafson. 2012. New records of rhinoceroses from the Ringold Formation of central Washington and the Hemphillian-Blancan boundary. Journal of Vertebrate Paleontology 32(3):727-731 [J. Marcot/J. Marcot]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 157237: authorized by Jonathan Marcot, entered by Jonathan Marcot on 10.06.2014
Creative Commons license: CC BY (attribution)
Taxonomic list
Mammalia | |
Aphelops cf. mutilus Matthew 1924 rhinoceros |