USGS 645-646, Raging River Formation, Hobart quadrangle (Eocene to of the United States)

Also known as USGS 645, USGS 646

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. 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.

• 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 43346: 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)
Gastropoda
 Cerithioidea - Turritellidae
Turritella aff. wasana turret shell
Subspecies: Turritella aff. wasana olequahensis
Turritella aff. vaderensis Merriam 1941 turret shell
 Sorbeoconcha - Naticidae
Bivalvia
 Pholadida - Corbulidae
Corbula sp. Bruguière 1789 clam
 Cardiida - Veneridae
Pitar ? sp. Römer 1857 venus clam
 Cardiida - Tellinidae
Tellina ? soledadensis Hanna 1927 tellin clam
 Cardiida - Psammobiidae
"Gari aff. hornii" = Gari (Gobraeus) hornii
"Gari aff. hornii" = Gari (Gobraeus) hornii Gabb 1864 clam
 Carditida - Carditidae
Venericardia sp., "Venericardia (Pacificor) cf. weaveri" = Venericardia (Pacificor) clarki
Venericardia sp. Lamarck 1801 clam
"Venericardia (Pacificor) cf. weaveri" = Venericardia (Pacificor) clarki Weaver and Palmer 1922 clam
also V. (P.) cf. lira
 Nuculida - Nuculidae
Acila (Truncacila) ? decisa Conrad 1855 divaricate nutclam
 Nuculanida - Nuculanidae
Nuculana aff. cowlitzensis Weaver and Palmer 1922 pointed nut clam