Also known as USGS 15309
Where: Columbia County, Oregon (45.8° N, 123.3° W: paleocoordinates 46.1° N, 111.0° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Lower Member (Keasey Formation), Priabonian (38.0 - 33.9 Ma)
• Lower member consists of 0-150 m of dark gray, highly micaceous, laminated siltstone and interbedded mudsone. Glaucontitc layers are not uncommon. The Keasey Formation consists of a maximum of 700 m of gray tuffaceous marine siltstone and massive mudstone discontinuously exposed in quaries, road and railway cuts, and along major drainages. The Keasey Fm overlies the late Eocene Cowlitz Fm, and underlies the Pittsburg Bluff Fm. Fm is subdivided into three informal members.
• bed-level stratigraphic resolution
Environment/lithology: deep-water; micaceous, gray siltstone and mudstone
Size class: macrofossils
Reposited in the USNM
Collection methods: quarrying,
• USGS collections are reposited in USNM. Other collections are reposited at Stanford University (SU), UC Berkeley Museum of Paleontology (UCMP), Cal. Acad. Sci. (CAS), Oregon State Dept. of Geology and Mineral Industries (DOGAMI)
Primary reference: C. S. Hickman. 1980. Paleogene Marine Gastropods of the Keasey Formation in Oregon. Bulletins of American Paleontology 78(310):1-112 [L. Ivany/E. Kowalski/M. Uhen]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 39948: authorized by Austin Hendy, entered by Austin Hendy on 12.06.2004, edited by Mark Uhen
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
Natica (Natica) weaveri Tegland 1933 moon snail
Polinices (Euspira) nuciformis Gabb 1864 moon snail
Polinices (? Euspira) clementensis Hanna 1927 moon snail | |
| |
Turrinosyrinx nodifera1, Parasyrinx sp.1, Gemmula rockcreekensis n. sp.1, Procerapex bentsonae1, Eopleurotoma aff. ornata, aff. Eopleurotoma ornata1, Ptychosyrinx facula1
Eopleurotoma aff. ornata Hickman 1976 turrid | |
Conus weltoni Hickman 1980 cone shell | |
Fusinus dilleri Hickman 1980 snail | |
Bruclarkia vokesi snail | |
Nassariidae indet. Iredale 1916 snail | |
Granula profundorum Hickman 1980 margin shell | |
Ancilla (Spirancilla) vernisa n. sp. Hickman 1980 snail | |
Sveltella ? keaseyensis snail
Bonellitia (Admetula) tumida Hickman 1980 snail | |
Exilia bentsonae Hickman 1980 snail | |
Echinophoria dalli Dickerson 1917 snail | |
Bathybembix columbiana Dall 1909 snail | |
"Solariella (Machaeroplax) cicca" = Solariella (Solariella) cicca
"Solariella (Machaeroplax) cicca" = Solariella (Solariella) cicca Hickman 1980 snail | |
Scaphander impunctatus Hickman 1980 snail | |
Bivalvia | |
"Aperiploma bainbridgensis" = Cochlodesma bainbridgensis2
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Kellia saxiriva n. sp.3
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