USGS 648, Raging River Formation, Hobart quadrangle (Eocene to of the United States)

Also known as USGS 648

Where: King County, Washington (47.4° N, 122.0° W: paleocoordinates 49.0° N, 106.9° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Raging River Formation, Lutetian to Lutetian (47.8 - 38.0 Ma)

• Formely included in Puget Group, but regarded as distinct due to lack of coal facies. Oldest sedimentary rocks in the Tiger Mountain-Taylor Mountain upland area. Probably lowermost collection of Raging River Formation. MacNeil (written communication) stated that there was little doubt this is a middle Eocene fauna. Probably equivalent to part of the McIntosh Formation of western Washington. Collection is from probably up to 1000 ft below the top of the formation.

• bed-level stratigraphic resolution

Environment/lithology: marine; siltstone and sandstone

• No paleoenvironmental data presented.
• Formation is characterised by thick-bedded siltstone, sandstone, and conglomerate. No specific lithologic data presented for this collection.

Size class: macrofossils

Reposited in the USGS

Collection methods: quarrying,

• No repository for collection listed, but likely to be USNM.

Primary reference: J. D. Vine. 1969. Geology and coal resources of the Cumberland. Hobart, and Maple Valley Quadrangles, King County, Washington. United States Geological Survey Professional Paper 624:1-67 [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 43347: authorized by Austin Hendy, entered by Austin Hendy on 12.08.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Exhaustive for mollusca. Mollusca identified by MacNeil (1959, 1960)
Echinoidea
 Spatangoida - Brissidae
Eupatagus aff. carolinensis Clark and Twitchell 1915 heart urchin
Bivalvia
 Solenida - Solenidae
Solena sp. Mörch 1853 clam
 Cardiida - Ungulinidae
"? Taras sp." = Diplodonta
"? Taras sp." = Diplodonta Bronn 1831 clam
 Cardiida - Veneridae
Pitar (cf. Lamelliconcha) eocenica Weaver and Palmer 1922 venus clam
Pitar sp. Römer 1857 venus clam
 Cardiida - Cardiidae
 Ostreida - Pteriidae
Pteria cf. pellucida Gabb 1864 pearl oyster
 Mytilida - Mytilidae
"Mytilus dichotomus" = Brachidontes (Brachidontes) cooperi
"Mytilus dichotomus" = Brachidontes (Brachidontes) cooperi Moore 1983 mussel
Gastropoda
 Opisthobranchia - Philinidae
"Megistostoma gabbiana" = Megistostoma gabbianum
"Megistostoma gabbiana" = Megistostoma gabbianum Stoliczka 1868 snail
 Neogastropoda - Pseudolividae
"Pseudoliva lineata" = Calorebama dilleri lineata
"Pseudoliva lineata" = Calorebama dilleri lineata Gabb 1864 snail
 Cerithioidea - Turritellidae
Cristispira pugetensis Allison 1965 turret shell
Turritella sp. Lamarck 1799 turret shell
Small form similar to both T. buwaldana coosensis and T. wasana hendoni
Turritella cf. buwaldana Dickerson 1916 turret shell
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium cf. stramineum Gabb 1864 tusk shell