Where: Clallam County, Washington (48.3° N, 124.2° W: paleocoordinates 47.9° N, 115.3° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Clallam Formation, Chattian (28.1 - 23.0 Ma)
• Exposures of massive, Vertipecten-bearing sandstone. The Clallam Formation is a predominantly marine sandstone with minor conglomerate and siltstone exposed along the Strait of Juan de Fuca in northwestern Washington. Marine molluscs occur throughout the 600 to 800 m thick formation but are especially abundant in the lowermost 240 m. Pillarian Stage age, a provincial time stratigraphic unit of late early Miocene age. Revised to Chattian following more recent work [Hendy, 7/2016].
• bed-level stratigraphic resolution
Environment/lithology: offshore; lithified sandstone
Size class: macrofossils
Reposited in the USGS
Collection methods: surface (float), surface (in situ),
• REPOSITORY: USGS (Menlo Park).
Primary reference: W.O. Addicott. 1976. Molluscan paleontology of the lower Miocene Clallam Formation, northwestern Washington. United States Geological Survey Professional Paper 976:1-44 [A. Miller/A. Hendy/A. Hendy]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 37593: authorized by Austin Hendy, entered by Austin Hendy on 17.03.2004
Creative Commons license: CC BY (attribution)