Where: Jefferson County, Oregon (44.8° N, 121.3° W: paleocoordinates 44.6° N, 115.2° W)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: John Day Formation, Early/Lower Hemingfordian (20.4 - 16.0 Ma)
• said to be early Hemingfordian based on B. submilleri
•"immediately above Tuff-3"
• bed-level stratigraphic resolution
Environment/lithology: terrestrial; tuffaceous, brown, silty sandstone
Size class: macrofossils
Collection methods: bulk, surface (in situ)
• "Many specimens were collected in-place"
Primary reference: L. Dingus. 1990. Systematics, stratigraphy, and chronology for mammalian fossils (Late Arikareean to Hemingfordian) from the uppermost John Day Formation, Warm Springs, Oregon. PaleoBios 12(47/48):1-24 [J. Alroy/J. Alroy/J. Alroy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 17967: authorized by John Alroy, entered by John Alroy on 27.09.1993
Creative Commons license: CC BY (attribution)
Taxonomic list
Mammalia | |
Parahippus aff. leonensis Sellards 1916 anchitheriine horse | |
Bouromeryx submilleri Frick 1937 ruminant |