Where: Clallam County, Washington (48.2° N, 124.1° W: paleocoordinates 47.9° N, 115.2° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Clallam Formation, Chattian (28.1 - 23.0 Ma)
• GENERAL STRATIGRAPHY: 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
Preservation: mold/impression
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 37590: authorized by Austin Hendy, entered by Austin Hendy on 17.03.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
"Acila cf. conradi" = Acila (Truncacila) conradi
"Acila cf. conradi" = Acila (Truncacila) conradi Meek 1864 divaricate nutclam | |
Nuculana ? calkinsi pointed nut clam | |
Macoma sp. n. sp. Leach 1819 tellin clam
Macoma albaria Conrad 1849 tellin clam
"Tellina emacerata" = Tellina (Oudardia) emacerata Conrad 1849 tellin clam | |
"Spisula cf. albaria" = Mactromeris albaria
| |
Dosinia whitleyi venus clam
"Securella ensifera" = Chione (Securella) ensifera Dall 1909 venus clam
Katherinella angustiformis venus clam | |
Panopea ramonensis Clark 1925 clam | |
Vertipecten cf. fucanus Dall 1898 scallop | |
Gastropoda | |
Crepidula sp. Lamarck 1799 slipper shell | |
Polinices ? victorianus, "Natica vokesi" = Natica (Natica) clarki
Polinices ? victorianus Clark and Arnold 1923 moon snail
"Natica vokesi" = Natica (Natica) clarki Etherington 1931 moon snail | |
Xenoturris antiselli turrid | |
Scaphopoda | |
Dentalium schencki Moore 1963 tusk shell |