Burr
Basic information
Sample name: Burr
Sample aka: Bearspaw; TMP locality L2393
Reference: C. S. Scott, D. N. Spivak, and A. R. Sweet. 2013. First mammals from the Paleocene Porcupine Hills Formation of southwestern Alberta, Canada. Canadian Journal of Earth Sciences 50(3):355-378 [ER 4111]
Geography
Country: Canada
State: Alberta
Coordinate: 51.11° N, -110.40° W
Coordinate basis: stated in text
Formation: Porcupine Hills
Time interval: Early Palaeocene
Zone: Torrejonian
Max Ma: 63.537
Min Ma: 62.53
Age basis: paleomag
Geography comments: "near the western limits of Calgary along the banks of Bow River... some 6 km west of Canada Olympic Park... west of Bearspaw Dam... in SW1/4 LSD8, S6-7, T25, R3, W5"
"middle Torrejonian (To2)" and estimated to be within chron 27r based on projecting the site into the Olympic Ski Jump section "approximately 6 km to the east" (age estimate based on Ogg 2020)
"middle Torrejonian (To2)" and estimated to be within chron 27r based on projecting the site into the Olympic Ski Jump section "approximately 6 km to the east" (age estimate based on Ogg 2020)
Environment
Lithology: sandstone
Taphonomic context: fluvial deposit
Habitat comments: "The formation consists primarily of large-scale crossbedded sandstones representing stacked channel and channel-fill complexes, as well as significant overbank mudstone units... The mammal fossils occur in caliche and clay clast lags at the base of massively bedded sandstones"
Methods
Life forms: ungulates,other small mammals
Sample size: 10 specimens
Sampled by: Royal Tyrrell Museum of Palaeontology
Sampling comments: collecting methods are not indicated
the mammals occur "along with fragmentary gastropod and bivalve shells, carbonized plant debris, and the bones and teeth of rare non-mammalian vertebrates, including fish, champsosaurs, and lizards" in localities in this area, but are not tied to this individual locality
the mammals occur "along with fragmentary gastropod and bivalve shells, carbonized plant debris, and the bones and teeth of rare non-mammalian vertebrates, including fish, champsosaurs, and lizards" in localities in this area, but are not tied to this individual locality
Metadata
Sample number: 4540
Contributor: John Alroy
Enterer: John Alroy
Modifier no: John Alroy
Created: 2024-12-02 21:42:57
Modified: 2024-12-02 21:45:22
Abundance distribution
5 species
3 singletons
total count 10
geometric series index: 17.6
Fisher's α: 3.980
geometric series k: 0.7071
Hurlbert's PIE: 0.6889
Shannon's H: 1.4185
Good's u: 0.7000
Each square represents a species. Square sizes are proportional to counts.
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