Cedar Point Quarry
Basic information
Sample name: Cedar Point Quarry
Reference: K. D. Rose. 1981. The Clarkforkian land-mammal age and mammalian faunal composition across the Paleocene-Eocene boundary. University of Michigan Papers on Paleontology 26:1-197 [ER 4102]
Geography
Country: United States
State: Wyoming
County: Big Horn
Coordinate: 44.72° N, -108.39° W
Coordinate basis: stated in text
Scale: quarry
Formation: Polecat Bench
Time interval: Late Palaeocene
Zone: Tiffanian
Ma: 58.1
Age basis: AEO
Geography comments: "about 9 miles south of Lovell" in "SW1/4, sec. 23, T.55 N., R.96 W."
not located in the main Polecat Bench section, and "its stratigraphic position... is based mainly on the fauna"
however, it is at the same level as Jepsen Quarry and below Croc Tooth Quarry and Divide Quarry according to Gingerich (1976)
not located in the main Polecat Bench section, and "its stratigraphic position... is based mainly on the fauna"
however, it is at the same level as Jepsen Quarry and below Croc Tooth Quarry and Divide Quarry according to Gingerich (1976)
Environment
Lithology: sandstone
Taphonomic context: fluvial deposit
Habitat comments: "in a clay-gall sandstone at the base of a thick channel sand. The productive layer is, in most places, only a few inches thick, and it lies immediately above a floodplain clay... This bed appears to have been deposited very rapidly as a result of relocation of a channel during its meandering across the floodplain"
Methods
Life forms: carnivores,primates,ungulates,other large mammals,other small mammals
Sampling methods: quarry
Sample size: 1973 specimens
Years: 1967 - 1972, 1974, 1975, 1978
Museum: Princeton University, UMMP, Yale University
Sampling comments: discovered by Robert Witter and Albert Silberling "in the late 1940s... The site was worked periodically during the ensuing decades, but it was not intensively quarried until 1967. Thereafter, Princeton parties devoted a major part of each field season through 1972 to excavations... Parties from the University of Michigan and Yale briefly worked the site together in 1974, and University of Michigan parties led by P. D. Gingerich spent parts of the 1975 and 1978 seasons collecting"
"fishes, turtles, lizards, crocodilians, champsosaurs, salamanders, and birds" are also present
"fishes, turtles, lizards, crocodilians, champsosaurs, salamanders, and birds" are also present
Metadata
Sample number: 4528
Contributor: John Alroy
Enterer: John Alroy
Modifier no: John Alroy
Created: 2024-11-30 10:43:43
Modified: 2024-12-03 10:24:25
Abundance distribution
39 species
5 singletons
total count 1973
geometric series index: 52.2
Fisher's α: 6.889
geometric series k: 0.8384
Hurlbert's PIE: 0.7822
Shannon's H: 2.1368
Good's u: 0.9975
Each square represents a species. Square sizes are proportional to counts.
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Register
| †Ptilodus kummae | 331 | |
| Gunnell (1994): "Ptilodus sp." | ||
| †Neoplagiaulax hunteri | 3 | |
| †Neoplagiaulax jepi | 17 | |
| Sloan (1987): "Neoplagiaulax sp." said to be new | ||
| †Ectypodus cf. powelli | 4 | |
| †Peradectes elegans | 5 | |
| Palaeoryctes sp. | 7 | |
| cf. | ||
| Myrmecoboides sp. | 3 | |
| Propalaeosinopa cf. diluculi = †Bessoecetor cf. septentrionalis | 12 | |
| Propalaeosinopa sp. | 7 | |
| ? | ||
| Niphredil radagasti = †Paleotomus radagasti | 7 | |
| Van Valen (1978): new; "Pantolestidae indet" said to be new | ||
| †Labidolemur soricoides | 9 | |
| Proteutheria indet. | 1 | |
| †Leptacodon cf. tener | 8 | |
| †Leptacodon cf. munusculum | 1 | |
| †Diacocherus meizon | 35 | |
| Gingerich (1983): new; "Mckennatherium cf. ladae" | ||
| †Litocherus zygeus | 68 | |
| Gingerich (1983): "Litolestes sp." said to be new; this may also include the new species Cedrocherus ryani of Gingerich (1983) | ||
| †Elpidophorus elegans | 1 | |
| Microsyopidae indet. | 1 | |
| ? | ||
| †Plesiadapis rex | 811 | |
| †Carpodaptes hazelae | 77 | |
| †Ignacius frugivorus | 20 | |
| †Picrodus cf. silberlingi | 4 | |
| †Chriacus oconostotae | 3 | |
| Van Valen (1978): new; "cf. Chriacus sp." | ||
| †Mimotricentes fremontensis | 2 | |
| Van Valen (1978): "? Mimotricentes sp." | ||
| †Thryptacodon australis | 152 | |
| †Colpoclaenus keeferi | 14 | |
| Van Valen (1978): "Claenodon ferox" | ||
| Claenodon cf. acrogenius = †Mentoclaenodon cf. acrogenius | 6 | |
| †Phenacodus grangeri | 99 | |
| †Ectocion cedrus | 181 | |
| Thewissen (1990): new; "Ectocion wyomingensis" | ||
| †Haplaletes cf. serior | 10 | |
| Van Valen (1978): presumably "Litomylus sp. A" or B | ||
| †Aletodon quadravus | 4 | |
| Gingerich (1983): "Litomylus sp. B" or A | ||
| †Bisonalveus holtzmani | 1 | |
| Gingerich (1983): new; "cf. Protoselene sp." | ||
| †Dissacus cf. praenuntius | 4 | |
| Van Valen (1978): "Dissacus sp." | ||
| †Caenolambda jepseni | 5 | |
| †Titanoides gidleyi | 20 | |
| plus 9 "pantodonts, indet." | ||
| †Tytthaena parrisi | 3 | |
| new | ||
| †Protictis agastor | 11 | |
| Gingerich and Winkler (1985): new; "Protictis cf. haydenianus" | ||
| †Protictis cf. paralus | 20 | |
| †Raphictis gausion | 6 | |
| Gingerich and Winkler (1985): new; "Protictis sp."; plus 6 "Protictis, sp. indet." | ||