Springerville (Pleistocene of the United States)

Also known as MNA Locality 184-1

Where: Apache County, Arizona (34.3° N, 109.3° W: paleocoordinates 34.4° N, 108.9° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Early/Lower Pleistocene (2.6 - 0.8 Ma)

• the basalts creating the gravels "have been dated using K/Ar at 1.67 +/- 0.09 mya (Laughlin et al., 1980)"

Environment/lithology: lacustrine; unlithified gravel

• "The Richville gravels were deposited behind lava basalts, which impounded the Richville reach of the Little Colorado River" and created "a lake"
• "gravels"

Size class: macrofossils

Collection methods: Museum of Northern Arizona collection

Primary reference: H. G. McDonald, L. D. Agenbroad, and C. Manganaro Haden. 2004. Late Pleistocene mylodont sloth Paramylodon harlani (Mammalia: Xenarthra) from Arizona. Southwestern Naturalist 49(2):229-238 [J. Alroy/J. Alroy]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 85145: authorized by John Alroy, entered by John Alroy on 02.12.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

 Perissodactyla - Equidae
Equus sp. Linnaeus 1758 horse
 Xenarthra - Megalonychidae
Megalonyx jeffersonii Desmarest 1822 Jefferson's ground sloth
 Xenarthra - Mylodontidae
Paramylodon harlani Owen 1840 Harlan's ground sloth
 Proboscidea - Elephantidae
Mammuthus sp. Brookes 1828 mammoth
 Ungulata - Camelidae
Camelops sp. Leidy 1854 camel
 Ungulata - Cervidae
Cervidae indet. Gray 1821 deer
 Ungulata - Antilocapridae
Antilocapridae indet. Gray 1866 pronghorn