ammonites
USGS M-853, Bacon and Timothy Creek drainage (Triassic of the United States)

Where: Idaho (42.8° N, 111.3° W: paleocoordinates 12.1° N, 35.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Portneuf Member (Thaynes Formation), Spathian (251.3 - 247.2 Ma)

• Upper part of Portneuf Limestone Member

• group of beds-level stratigraphic resolution

Environment/lithology: lithified limestone

Size class: macrofossils

Collected by R. Rioux, J. Dyni in 1959

Primary reference: P. R. Hoover. 1979. Early Triassic Terebratulid brachiopods from the western interior of the United States. United States Geological Survey Professional Paper 1057:1-21 [M. Clapham/M. Clapham/M. Clapham] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 109770: authorized by Matthew Clapham, entered by Matthew Clapham on 26.05.2011

Creative Commons license: CC BY-NC-ND (attribution-noncommercial-no derivatives)