Black Butte (UO 2337) (Miocene of the United States)

Also known as Quarry 11

Where: Malheur County, Oregon (43.6° N, 117.5° W: paleocoordinates 44.2° N, 115.0° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Juntura Formation, Clarendonian (13.6 - 10.3 Ma)

Environment/lithology: terrestrial

Collection methods: bulk, sieve

Primary reference: J. A. Shotwell and D. E. Russell. 1963. Mammalian fauna of the Upper Juntura formation, the Black Butte local fauna. Transactions of the American Philosophical Society 53(1):42-69 [J. Alroy/J. Alroy/R. Hulbert]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 18820: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Richard Hulbert

Creative Commons license: CC BY (attribution)

Taxonomic list

• KA 1240 dated at 12.1 (= 12.42) Ma (crushed basalt); said to be at top of lower mbr. by Tedford et al. 1987, and text of Evernden and James 1964 indicates that it is roughly equivalent to the "patagonite basalt" at that level; based on Fig. 5 of Bowen et al. 1963, this is about 500' below Quarry 11, whereas much younger Welded Tuff is only about 350' above, and most of the general fauna is from about 150' below the Welded Tuff; I conclude that the basalt date is useless because fauna is probably 9.9 - 10.6 Ma old
NISP 76, excluding generically indeterminate records
 Anseriformes - Anatidae
Eremochen russelli2 Brodkorb 1961 goose
Querquedula pullulans n. sp.2 Brodkorb 1961 duck
Ocyplonessa shotwelli n. sp.2 Brodkorb 1961 merganser
 Rodentia - Cricetidae
"Copemys dentalis" = Peromyscus dentalis5
"Copemys dentalis" = Peromyscus dentalis5 Hall 1930 deer mouse
 Rodentia - Sciuridae
Spermophilus sp.1 Cuvier 1825 ground squirrel
 Rodentia - Heteromyidae
Cupidinimus sp. Wood 1935 rodent
 Rodentia - Castoridae
Eucastor malheurensis4 Shotwell and Russell 1963 beaver
 Lagomorpha - Leporidae
 Lipotyphla - Talpidae
Scapanus cf. shultzi3 Tedford 1961 mole
 Tribosphenida - Soricidae
? Hesperosorex sp. Hibbard 1957 red-toothed shrew
Crusafontina minima6 Hutchison and Bown 1980 red-toothed shrew
this or UO 2337 is the type locality
 Carnivora - Canidae
Caninae indet. Gill 1872 canine
 Proboscidea - Mammutidae
Mammut sp. Blumenbach 1799 mastodon
see Shotwell 1963a
 Ungulata - Merycoidodontidae
Merychyus sp.4 Leidy 1858 oreodont
 Ungulata - Tayassuidae
Tayassuinae indet. Palmer 1897 peccary
"Prosthennops" of Shotwell 1963a;