Little Muddy Creek
Basic information
Sample name: Little Muddy Creek
Reference: C. L. Gazin. 1969. A new occurrence of Paleocene mammals in the Evanston Formation, southwestern Wyoming. Smithsonian Contributions to Paleobiology 2:1-16 [ER 4117]
Geography
Country: United States
State: Wyoming
County: Lincoln
Coordinate: 41.58° N, -110.69° W
Coordinate basis: stated in text
Scale: quarry
Formation: Evanston
Time interval: Middle Palaeocene
Zone: Torrejonian
Ma: 60.55
Age basis: AEO
Geography comments: "between Bell and Little Muddy Creeks, near the southwestern corner of section 31, T. 19 N., R. 117 W., very close to the south boundary of Lincoln County... The exposure is of rather limited extent"
said to be To3 by Higgins (2003)
said to be To3 by Higgins (2003)
Environment
Lithology: not described
Habitat comments: "variegated strata" (no other details given)
mostly "isolated teeth and indeterminate bone fragments"
mostly "isolated teeth and indeterminate bone fragments"
Methods
Life forms: primates,ungulates,other small mammals
Sample size: 64 specimens
Years: 1959, 1961
Museum: USNM
Sampling comments: discovered by Joshua I. Tracy, Jr. and Steven S. Oriel in 1959 and collected by Tracy, Oriel, Franklin L. Pearce and C. L. Gazin in 1961 with further collections in 1963, 1964, 1965, and 1967
"no remains of fish, and, among reptiles, only indeterminate fragments of a turtle have been seen"
"no remains of fish, and, among reptiles, only indeterminate fragments of a turtle have been seen"
Metadata
Sample number: 4548
Contributor: John Alroy
Enterer: John Alroy
Created: 2024-12-03 11:08:24
Modified: 2024-12-03 11:08:24
Abundance distribution
15 species
5 singletons
total count 64
geometric series index: 30.7
Fisher's α: 6.170
geometric series k: 0.8135
Hurlbert's PIE: 0.8606
Shannon's H: 2.2941
Good's u: 0.9233
Each square represents a species. Square sizes are proportional to counts.
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Register
| †Ptilodus cf. montanus | 1 | |
| †Neoplagiaulax cf. grangeri | 1 | |
| †Ectypodus cf. powelli | 1 | |
| "near" this species | ||
| Leptacodon ? ladae = †Adunator ? ladae | 2 | |
| "possibly" this species | ||
| †Aphronorus orieli | 18 | |
| type | ||
| †Torrejonia sirokyi | 2 | |
| Gunnell (1989): "Torrejonia cf. wilsoni" | ||
| †Nannodectes cf. intermedius | 2 | |
| Gingerich et al. (1983): "Pronothodectes cf. matthewi" | ||
| †Chriacus cf. pelvidens | 6 | |
| Chriacus cf. truncatus = †Chriacus cf. baldwini | 4 | |
| Tricentes cf. subtrigonus = †Mimotricentes cf. subtrigonus | 8 | |
| 5 enumerated plus "some fragments of lower teeth" (3+) | ||
| †Promioclaenus cf. lemuroides | 8 | |
| approximate count | ||
| †Promioclaenus cf. acolytus | 4 | |
| †Litaletes cf. disjunctus | 1 | |
| Haplaletes sp. | 5 | |
| ? | ||
| Condylarthra indet. | 1 | |
| ?: a different form | ||