LACM IP12326 Menlo (Eocene of the United States)

Where: Pacific County, Washington (46.6° N, 123.6° W: paleocoordinates 46.9° N, 111.3° W)

• coordinate stated in text

When: Refugian foram zone, Lincoln Creek Formation, Priabonian (38.0 - 33.9 Ma)

• W. W. Rau (1990, personal commun.), on the basis of benthic foraminifera, has assigned this siltstone to the foraminiferal upper Refugian

•Stage (late Eocene). Age confirmed by Nesbitt (2018).

Environment/lithology: marine; limestone

• subduction-related methane seeps
• The Menlo deposit is enclosed within siltstone of the Lincoln Creek Formation (Wagner,

•1967). The bed was reported to be 2 m thick, 7.5 m long, and 3 m wid

Size classes: macrofossils, mesofossils

Primary reference: J. L. Goedert and R. L. Squires. 1990. Eocene deep-sea communities in localized limestones formed by subduction-related methane seeps, southwestern Washington . Geology 18:1182-1185 [P. Holroyd/P. Holroyd/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 191204: authorized by Patricia Holroyd, entered by Patricia Holroyd on 15.01.2018, edited by Mark Uhen

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Mytilida - Mytilidae
"Modiolus (Modiolus) willapensis" = Bathymodiolus willapaensis
"Modiolus (Modiolus) willapensis" = Bathymodiolus willapaensis Squires and Goedert 1991 mussel
 Cardiida - Vesicomyidae
Calyptogena chinookensis Squires and Goedert 1991 clam
 Lucinida - Thyasiridae
Thyasira (Conchocele) folgeri Wagner and Schilling 1923 clam
Gastropoda
 Naticoidea - Naticidae
Naticidae indet. Guilding 1834 moon snail