House Mountain (MNA 319) ( of the United States)

Also known as Bressler

Where: Yavapai County, Arizona (34.8° N, 111.9° W: paleocoordinates 34.9° N, 111.2° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Verde Formation, Blancan (4.9 - 1.8 Ma)

• from a "1/2-m-thick" bed

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; diatomaceous, green mudstone

• "greenish diatomaceous mudstone"

Size class: mesofossils

Primary reference: N. J. Czaplewski. 1987. Sigmodont rodents (Mammalia; Muroidea; Sigmodontinae) from the Pliocene (early Blancan) Verde Formation, Arizona. Journal of Vertebrate Paleontology 7(2):183-199 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 19621: authorized by John Alroy, entered by John Alroy on 30.04.1994, edited by Patricia Holroyd

Creative Commons license: CC BY (attribution)

Taxonomic list

• 55 m above a basalt dated by KA at 5.5 +/- 0.2 Ma

•"third reversed polarity interval of the Gilbert magnetic chron," i.e., Chron 3n.2r, between 4.43 and 4.61 Ma according to Cande and Kent 1992

•"Soricidae indet." is omitted by Czaplewski 1990

•specimen of "Nebraskomys sp." is "not assignable" to this genus, but no reidentification is given: Winkler and Grady 1990; referred to as Arvicolinae indet. by Czaplewski 1990

Mammalia
 Carnivora - Procyonidae
Bassariscus sp. Coues 1887 ringtail
 Rodentia - Heteromyidae
Prodipodomys idahoensis1 Hibbard 1962 rodent
 Rodentia - Cricetidae
Postcopemys repenningi2 Lindsay and Czaplewski 2011 mouse
"Sigmodon medius" = Sigmodon minor Gidley 1922 cotton rat
Neotoma vaughani1 Czaplewski 1990 pack rat
Ogmodontomys sp.3 Hibbard 1941 mouse
 Lagomorpha - Leporidae
Leporidae indet. Fischer de Waldheim 1817 rabbit