CSUN Loc. 1567 - Garrard Creek [Crescent/McIntosh Fm transition] (Eocene of the United States)

Where: Lewis County, Washington (46.8° N, 123.3° W: paleocoordinates 47.7° N, 109.8° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Bartonian (41.3 - 38.0 Ma)

• STRATIGRAPHIC RELATIONS: Transition zone of interbedded volcanic and sedimentary rocks between the upper Crescent Formation and the overlying lower member of Mcintosh Formation (as used in the emended sense of Pease & Hoover, 1957). AGE: Middle Eocene; placed by enterer into younger of two Middle Eocene stages on the basis of stratigraphic position. STRATIGRAPHIC POSITION: Localities are about 2 m apart, in ascending stratigraphic order, in a 17-m-thick section.

• bed-level stratigraphic resolution

Environment/lithology: marine; poorly lithified, pebbly mudstone

• ENVIRONMENT: The depositional environment is interpreted to have been on the flank of an oceanic volcanic island in outer shelf to upper slope (bathyal) muds subject to the influx of shells of nearshore and shallow-marine megainvertebrates and pebbly basalt debris.
• SPECIFIC LITHOLOGY: Pebbly mudstones. LITHIFICATION: Poorly lithified, on the basis of figured specimens.

Size class: macrofossils

Collected by Goedert, Goedert; reposited in the LACM

Collection methods: bulk, surface (float), surface (in situ),

• COLLECTORS: J. Goedert, G. Goedert. REPOSITORY: Los Angeles County Museum of Natural History (LACM).

Primary reference: R. L. Squires and J. L. Goedert. 1995. New Species of Middle Eocene Gastropods from the Northern Doty Hills, Southwestern Washington. The Veliger 38(3):254-269 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 161922: authorized by Austin Hendy, entered by Austin Hendy on 16.09.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for marine invertebrates. NOMENCLATURE: Authoritative publication, with modern nomenclature, and species-resolution identifications.
Maxillopoda
 Scalpelliformes - Scalpellidae
Aporolepas sp. Withers 1953 barnacle
Craniata
 Craniida - Craniidae
Polychaeta
 Sabellida - Serpulidae
Bivalvia
 Arcida - Glycymerididae
Glycymeris sp. Da Costa 1778 clam
 Pectinida - Pectinoidae
Spondylus carlosensis Anderson 1905 scallop
 Ostreida - Ostreidae
Ostrea sp. Linnaeus 1758 oyster
 Ostreida - Malleidae
 Mytilida - Mytilidae
 Cardiida - Chamidae
Chama sp. Linnaeus 1758 jewel box
Gastropoda
 Patellogastropoda - Lottiidae
Erginus vaderensis Lindberg 1979 limpet
 Neogastropoda - Conidae
Conus aegilops cone shell
 Naticoidea - Naticidae
Polinices (Polinices) hornii Gabb 1864 moon snail
 Cypraeoidea - Pediculariidae
Cypraeogemmula warnerae Effinger 1938 snail
 Sorbeoconcha - Turritellidae
Turritella sp. Lamarck 1799 turret shell
 Turbinoidea - Turbinidae
"Cantrainea hieroglyphica" = Homalopoma (Cantrainea) snail
Homalopoma umpquaensis Merriam and Turner 1937 snail
SUBSPECIES: Homalopoma umpquaensis domenginensis
 Trochoidea - Trochidae
Solariella (Solariella) garrardensis Squires and Goedert 1995 top snail
 Trochoidea - Liotiidae
Liotia washingtoniana n. sp. Squires and Goedert 1995 snail
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium "sp. 2" Linnaeus 1758 tusk shell
smooth
Bryozoa
  -
Bryozoa indet. Ehrenberg 1831
Crinoidea
 Isocrinida - Isocrinidae
Isocrinidae indet. Gislén 1924 Sea lily
Hexactinellida
 Hexactinosa - Euretidae
Eurete goederti glass sponge
 Hexactinosa - Aphrocallistidae
Anthozoa
 Scleractinia - Dendrophylliidae
Dendrophyllia tejonensis Nomland 1916 stony coral
 Scleractinia - Flabellidae
Flabellum clarki Bentson 1943 stony coral