Shonto Creek Canyon (Pleistocene of the United States)

Also known as Shato Springs; MNA Locality 186-1

Where: Navajo County, Arizona (36.6° N, 110.7° W: paleocoordinates 36.6° N, 110.7° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Late/Upper Pleistocene (0.1 - 0.0 Ma)

• "The age of the Shonto fauna is 30,800 +/- 1,700 yr BP (GX-10493) based on a conventional carbon-14 date on a sample of bone from the sloth"

• group of beds-level stratigraphic resolution

Environment/lithology: deltaic; claystone

• "a remnant of a deltaic deposit inundated by a perennial lake formed by impoundment within the canyon during the late Pleistocene"
• "a clay-rich horizon of the dune, which might indicate a former shoreline of the lake"

Size class: macrofossils

Collected in 1982

Collection methods: quarrying

• Museum of Northern Arizona collection

•"the sloth was found in situ"

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 85144: authorized by John Alroy, entered by John Alroy on 02.12.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

• original collection described by Gregory (1917)
Mammalia
 Proboscidea - Elephantidae
Mammuthus sp. Brookes 1828 mammoth
see Agenbroad and Mead 1989
 Rodentia - Sciuridae
Sciuridae indet. Gray 1821 squirrel
"a sciurid"
 Rodentia - Cricetidae
Peromyscus sp. Gloger 1841 deer mouse
 Rodentia - Geomyidae
Thomomys sp. Wied-Neuwied 1839 pocket gopher
 Lagomorpha - Leporidae
Lepus sp. Linnaeus 1758 hare
 Carnivora - Felidae
Felidae indet. Gray 1821 cat
 Carnivora - Canidae
Urocyon sp. Baird 1857 gray fox
 Artiodactyla - Bovidae
Ovis sp. Linnaeus 1758 sheep
 Artiodactyla - Cervidae
Cervus sp. Linnaeus 1758 deer
 Perissodactyla - Equidae
Equus sp. Linnaeus 1758 horse
 Perissodactyla - Tapiridae
Tapirus cf. merriami Frick 1921 tapir
see Agenbroad and Downs 1984
  - Mylodontidae
Paramylodon harlani Owen 1840 Harlan's ground sloth