CAS loc. 181, Cowlitz River, 4mi E. of Vader (Eocene of the United States)
Where: Lewis County, Washington (46.4° N, 122.9° W: paleocoordinates 46.8° N, 110.6° W)
• coordinate based on political unit
• small collection-level geographic resolution
When: Late/Upper Eocene (37.2 - 33.9 Ma)
• There appear to be two formations represented at this point.... This sandstone is probably Eocene.
• bed-level stratigraphic resolution
Environment/lithology: coastal; blue, conglomeratic sandstone and pebbly conglomerate
• The fossils occur in a sandstone formation which is associated with a conglomerate. The upper zone which is mostly Ostrea is in a conglomerate composed of basalt pebbles and boulders. The lower zone is nearly all small gastropods which occur in blue sandstone. These two beds dip north-west at a very small angle—about 0° -5° . A few yards to thesouth, a well stratified, coarse, gray, compact sandstone isexposed dipping south at an angle of 10° and striking N.70° E. About 20 feet south of the fossil beds a mass of coarse conglomerate is butting perpendicularly against the sand to the south. This conglomerate appears to be the same as that where the fossils occur.
Size class: macrofossils
Reposited in the CAS
Primary reference: R. E. Dickerson. 1917. Climate and its influence upon the Oligocene faunas of the Pacific Coast, with descriptions of some new species from the Molopophorus lincolnensis Zone. Proceedings of the California Academy of Sciences 7(6):157-192 [J. Marcot/J. Marcot]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 4900: authorized by John Alroy, entered by John Alroy on 29.08.1999, edited by Jonathan Marcot
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
| Bivalvia | |
"Barbatia gabbi n. sp." = Porterius gabbi
"Barbatia gabbi n. sp." = Porterius gabbi Dickerson 1917 clam | |
"Arca washingtoniana n. sp." = Tetrarca washingtoniana
"Arca washingtoniana n. sp." = Tetrarca washingtoniana Dickerson 1917 clam | |
"Pecten (Chlamys) grunskyi n. sp." = Chlamys grunskyi2
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Lima bella n. sp.
Lima bella n. sp. Dickerson 1917 file clam | |
"Ostrea griesensis" = Acutostrea griesensis1
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"Cardita weaveri n. sp." = Glans weaveri
"Cardita weaveri n. sp." = Glans weaveri Dickerson 1917 clam | |
"Astarte perrini n. sp." = Crassatella perrini
"Astarte perrini n. sp." = Crassatella perrini Dickerson 1917 clam | |
"Diplodonta dalli n. sp." = Lucina (Here) dalli
"Diplodonta dalli n. sp." = Lucina (Here) dalli Dickerson 1917 clam | |
Glycimeris andersoni n. sp., "Saxicava sp." = Hiatella
Glycimeris andersoni n. sp. Dickerson 1917 clam
"Saxicava sp." = Hiatella Daudin 1801 clam | |
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"Corbula cowlitzensis n. sp." = Caryocorbula cowlitzensis
"Corbula cowlitzensis n. sp." = Caryocorbula cowlitzensis Dickerson 1917 clam | |
"Saxicava arnoldi n. sp." = Mya (Antiguamya) arnoldi
"Saxicava arnoldi n. sp." = Mya (Antiguamya) arnoldi Dickerson 1917 softshell clam | |
"Spisula packardi n. sp." = Pseudocardium packardi
"Spisula packardi n. sp." = Pseudocardium packardi Dickerson 1917 clam | |
"Pitaria clarki n. sp." = Lamelliconcha clarki
"Pitaria clarki n. sp." = Lamelliconcha clarki Dickerson 1917 venus clam | |
"Chama pacifica n. sp." = Chama grunskyi
"Chama pacifica n. sp." = Chama grunskyi Hanna 1924 jewel box | |
"Loxocardium etheringtoni" = Schedocardia etheringtoni1
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"Tellina (Tellina) townsendensis" = Tellina (Elliptotellina) townsendensis1, Tellina (Moerella) lincolnensis1
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"Psammobia martini n. sp." = Gari martini
"Psammobia martini n. sp." = Gari martini Dickerson 1917 clam | |
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Semele reagani n. sp. Dickerson 1917 clam | |
"Leda merriami n. sp." = Nuculana (Saccella) merriami, "Leda washingtonensis" = Nuculana (Saccella) washingtonensis
"Leda merriami n. sp." = Nuculana (Saccella) merriami Dickerson 1917 pointed nut clam
"Leda washingtonensis" = Nuculana (Saccella) washingtonensis Weaver 1916 pointed nut clam | |
| Gastropoda | |
Actaeon parvum n. sp.
Actaeon parvum n. sp. Dickerson 1917 snail | |
"Patella subquadrata n. sp." = Acmaea ocitatia, Acmaea simplex n. sp.
"Patella subquadrata n. sp." = Acmaea ocitatia Hanna 1924 limpet
Acmaea simplex n. sp. Dickerson 1917 limpet | |
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Crepidula sp. Lamarck 1799 slipper shell | |
"Eulima clarki n. sp." = Melanella (Melanella) clarki
"Eulima clarki n. sp." = Melanella (Melanella) clarki Dickerson 1917 snail | |
"Seraphs andersoni n. sp." = Terebellum andersoni
"Seraphs andersoni n. sp." = Terebellum andersoni Dickerson 1917 true conch | |
"Spirotropis (Spirotropis) winlockensis" = Suavodrillia winlockensis1
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Conus ruckmani n. sp.
Conus ruckmani n. sp. Dickerson 1917 cone shell | |
Exilia weaveri n. sp.
Exilia weaveri n. sp. Dickerson 1917 snail | |
Molopophorus stephensoni n. sp.
Molopophorus stephensoni n. sp. Dickerson 1917 snail | |
"Fasciolaria gabbi n. sp." = Whitneyella gabbi, Fusinus gesteri n. sp.
"Fasciolaria gabbi n. sp." = Whitneyella gabbi Dickerson 1917 snail
Fusinus gesteri n. sp. Dickerson 1917 snail | |
"Strepsidura packi n. sp." = Siphonalia packi
"Strepsidura packi n. sp." = Siphonalia packi Dickerson 1917 true whelk | |
"Marginella pacifica n. sp." = Marginella instabilata
"Marginella pacifica n. sp." = Marginella instabilata Hanna 1924 margin shell | |
"Murex vaughani n. sp." = Trophon calamitus
"Murex vaughani n. sp." = Trophon calamitus Hanna 1924 murex snail | |
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"Galeodea dalli n. sp." = Echinophoria dalli Dickerson 1917 snail | |
"Neverita nomlandi n. sp." = Neverita (Neverita) globosa
"Neverita nomlandi n. sp." = Neverita (Neverita) globosa Gabb 1869 moon snail | |
"Hipponyx arnoldi n. sp." = Hipponix arnoldi, "Hipponyx ornata n. sp." = Hipponix arnoldi
"Hipponyx arnoldi n. sp." = Hipponix arnoldi Dickerson 1917 hoof shell
"Hipponyx ornata n. sp." = Hipponix arnoldi Dickerson 1917 hoof shell | |
"Epitonium merriami n. sp." = Cerithiopsis merriami, "Triforis martini n. sp." = Cerithiopsis washingtoniana
"Epitonium merriami n. sp." = Cerithiopsis merriami Dickerson 1917 snail
"Triforis martini n. sp." = Cerithiopsis washingtoniana Dickerson 1915 snail | |
Littorina oligocenica n. sp.
Littorina oligocenica n. sp. Dickerson 1917 periwinkle | |
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Epitonium condoni Dall 1909 wentletrap | |
"Cerithiopsis howardi n. sp." = Bittium howardi
"Cerithiopsis howardi n. sp." = Bittium howardi Dickerson 1917 cerith snail | |
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