Also known as USGS M6373
Where: Clallam County, Washington (48.2° N, 122.1° W: paleocoordinates 48.0° N, 115.5° W)
• coordinate based on political unit
• outcrop-level geographic resolution
When: Clallam Formation, Early/Lower Miocene (23.0 - 16.0 Ma)
• Exposure of 1-m-thick fossil bed. 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 afe, a provincial time stratigraphic unit of late early Miocene age.
• bed-level stratigraphic resolution
Environment/lithology: offshore; lithified sandstone
Size class: macrofossils
Preservation: mold/impression
Reposited in the UW
Collection methods: quarrying,
• Collections held at USGS, Menlo Park; Washington University, Seattle; Stanford University
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 37574: authorized by Austin Hendy, entered by Austin Hendy on 17.03.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Scaphopoda | |
Dentalium schencki Moore 1963 tusk shell | |
Bivalvia | |
"Thracia trapezoides" = Thracia (Homoeodesma) trapezoides
"Thracia trapezoides" = Thracia (Homoeodesma) trapezoides Conrad 1849 clam | |
"? Clinocardium aff. nuttallii" = Clinocardium (Clinocardium) nuttallii
"? Clinocardium aff. nuttallii" = Clinocardium (Clinocardium) nuttallii Conrad 1837 cockle [entered as Clinocardium nuttalli]
| |
Macoma albaria Conrad 1849 tellin clam
Macoma astori Dall 1909 tellin clam
Macoma sookensis Clark and Arnold 1923 tellin clam | |
Katherinella angustifrons, "Securella ensifera" = Chione (Securella) ensifera
Katherinella angustifrons Conrad 1849 venus clam
"Securella ensifera" = Chione (Securella) ensifera Dall 1909 venus clam | |
"Solen conradi" = Solena (Plectosolen) conradi
"Solen conradi" = Solena (Plectosolen) conradi Dall 1900 clam | |
Nuculana calkinsi pointed nut clam | |
Gastropoda | |
Crepidula princeps Conrad 1855 slipper shell | |
Bruclarkia yaquinana Anderson and Martin 1914 snail | |
Ophiodermella olympicensis Addicott 1976 turrid | |
Turritella oregonensis Conrad 1849 turret shell |