LACM 7833 (Neogene of the United States)

Where: Lassen County, California (39.8° N, 120.0° W: paleocoordinates 39.7° N, 117.3° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Late/Upper Hemphillian (10.3 - 4.9 Ma)

• member-level stratigraphic resolution

Environment/lithology: terrestrial; tuffaceous, brown, red sandstone and tuffaceous, sandy siltstone

• the upper sandy member ranges from ~700 – 1,150 m thick and is composed of red-brown, tan and buff conglomerate and sandstone, and buff, dark-brown, red and green-gray tuffaceous siltstone, sandy siltstones, and lignitic siltstones

Size class: macrofossils

Primary reference: T. S. Kelly and R. Secord. 2011. A Reevaluation of the Mammalian Fauna From the Hallelujah Formation, Long Valley, Lassen County, California. Paludicola 8(3):142-154 [J. Marcot/J. Marcot]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 175218: authorized by Jonathan Marcot, entered by Jonathan Marcot on 05.12.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Mammalia
 Proboscidea -
Proboscidea indet.
Proboscidea indet. proboscidean
 Artiodactyla - Camelidae
cf. Hemiauchenia sp.
cf. Hemiauchenia sp. Gervais and Ameghino 1880 camel
 Perissodactyla - Equidae
Dinohippus mexicanus
Dinohippus mexicanus Lance 1950 horse