Lakeside (Shutter Landing - Tyee Formation) (Eocene of the United States)

Also known as Tyee Formation (Shutter Landing), Lakeside)

Where: Coos County, Oregon (43.5° N, 124.2° W: paleocoordinates 45.2° N, 109.4° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Tyee Formation, Middle Eocene (48.6 - 37.2 Ma)

• Collected from a sandy shale lens, which overlies massive micaceous sandstone

• bed-level stratigraphic resolution

Environment/lithology: coastal; sandy shale

• Collected from a sandy shale lens

Size class: macrofossils

Collection methods: quarrying,

Primary reference: J. E. Allen and E.M. Baldwin. 1944. Geology and coal resources of the Coos Bay Quadrangle, Oregon. State of Oregon Department of Geology and Mineral Industries Bulletin 27:1-160 [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 37871: authorized by Austin Hendy, entered by Austin Hendy on 25.03.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Reresentative for mollusca, no other groups mentioned or listed
Bivalvia
 Mytilida - Mytilidae
"Volsella (Brachidontes) cowlitzensis" = Brachidontes
"Volsella (Brachidontes) cowlitzensis" = Brachidontes mussel
 Cardiida - Veneridae
 Nuculida - Nuculidae
Acila decisa divaricate nutclam
Gastropoda
 Triphoroidea - Cerithiopsidae
Cerithiopsis sp. Hanley 1849 snail
 Neogastropoda - Conidae
Conus sp. Linnaeus 1758 cone shell
 Stromboidea - Strombidae
Ectinochilus (Macilentos) macilenta White 1889 true conch
Subspecies: Ectinochilus (Macilentos) macilenta
 Sorbeoconcha - Turritellidae
Turritella uvasana Conrad 1865 turret shell
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium sp. Linnaeus 1758 tusk shell