Hemingford Quarry 12D (Miocene of the United States)

Also known as UNSM Bx-12D

Where: Box Butte County, Nebraska (42.2° N, 103.1° W: paleocoordinates 42.9° N, 99.2° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Runningwater Formation, Early/Lower Hemingfordian (20.4 - 16.0 Ma)

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Reposited in the UNSM

Primary reference: X. Wang, R. H. Tedford, and B. E. Taylor. 1999. Phylogenetic systematics of the Borophaginae (Carnivora: Canidae). Bulletin of the American Museum of Natural History 243:1-392 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 17942: authorized by John Alroy, entered by John Alroy on 19.05.2000, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Artiodactyla - Merycoidodontidae
Merychyus elegans4 Leidy 1858 oreodont
 Carnivora - Amphicyonidae
Amphicyon galushai2 Hunt 2003 bear-dog
Daphoenodon (Borocyon) robustum3 Peterson 1910 bear-dog
 Carnivora - Ursidae
Cephalogale sp.1 Jourdan 1862 bear
said to be new
 Carnivora - Canidae
Leptocyon leidyi n. sp.5 Tedford et al. 2009 canine
UNSM 25715
Metatomarctus canavus Simpson 1932 bone-crushing dog