East Birch Creek
Basic information
Sample name: East Birch Creek

Reference: A. P. Jijina, E. D. Currano, and K. Constenius. 2019. The paleobotany and paleoecology of the Eocene Herren Beds of north-central Oregon, USA. Palaios 34:424-436 [ER 4417]
Geography
Country: United States

State: Oregon

Coordinate: 45.28° N, -118.45° W
Latlng basis: estimated from map

Time interval: Early Eocene

Ma: 51.9

Age basis: other

Geography comments: "~11 km southeast of the town of Pilot Rock" (rough coordinate based on map in Fig. 1)
from the lower Herren Beds "approximately 2 m below a 51.9 ± 0.9 Ma tuff" (U/Pb on zircon) and "late early Eocene"

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Environment
Lithology: sandstone

Taphonomic context: fluvial deposit

Habitat comments: from "A block of massive and unevenly bedded, fine-grained sandstone" above "cross-bedded sandstones"

Methods
Life forms: leaves

Sampling methods: quarry

Sample size: 497 specimens

Years: 2014, 2015

Museum: University of Wyoming Geological Museum

Net or trap nights: 0

Basal area status: not applicable

Sampling comments: "quarried" from an extracted block

Metadata
Sample no: 4701

Contributor no: John Alroy

Enterer: John Alroy

Modifier no: John Alroy

Created: 2025-11-22 23:33:37

Modified: 2025-11-22 23:50:53

Abundance distribution
Each square represents a species. Square sizes are proportional to counts. Values are logged.
Statistics
15 species
1 singleton
total count 497
geometric series index: 20.5
Fisher's α: 2.916
geometric series k: 0.703
Hurlbert's PIE: 0.642
Shannon's H: 1.5084
Good's u: 0.998
Register
Angiospermae indet. HER011
Angiospermae indet. HER025
Angiospermae indet. HER032
Macginitiea sp. HER04 4
Angiospermae indet. HER0588
Angiospermae indet. HER062
Angiospermae indet. HER072
Angiospermae indet. HER0812
Lauraceae indet. HER 09278
Angiospermae indet. HER1018
Angiospermae indet. HER1126
Glyptostrobus sp. HER12 44
Taxodium "dubium HER13"4
Allantodiopsis sp. HER14 9
Polypodiophyta indet. HER152