CSUN Loc. 1570 - Garrard Creek [Crescent/McIntosh Fm transition] (Eocene of the United States)

Also known as LACMIP loc. 16850; LACMIP loc. 41570

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 161924: 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.
Thecostraca
 Pollicipomorpha - Zeugmatolepadidae
Aporolepas sp. Withers 1953 barnacle
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium "sp. 1" Linnaeus 1758 tusk shell
ribbed
Dentalium "sp. 2" Linnaeus 1758 tusk shell
smooth
Gastropoda
 Sorbeoconcha - Pediculariidae
Cypraeogemmula warnerae Effinger 1938 snail
[entered as Cypraeagemmula warnerae]
 Neogastropoda - Muricidae
Pseudoperissolax blakei Conrad 1855 murex snail
Pterynotus (Pterynotus) washingtonicus n. sp. Squires and Goedert 1995 mustached bat
 Neogastropoda - Turridae
Gemmula abacta Anderson and Hanna 1925 turrid
 Neogastropoda - Conidae
Conus aegilops cone shell
 Sorbeoconcha - Naticidae
Polinices (Polinices) hornii Gabb 1864 moon snail
 Sorbeoconcha - Hipponicidae
Hipponix amoldi hoof shell
 Trochoidea - Solariellidae
Solariella (Solariella) garrardensis Squires and Goedert 1995 snail
 Trochoidea - Turbinidae
Homalopoma umpquaensis, "Cantrainea hieroglyphica" = Homalopoma (Cantrainea)
Homalopoma umpquaensis Merriam and Turner 1937 snail
SUBSPECIES: Homalopoma umpquaensis domenginensis
"Cantrainea hieroglyphica" = Homalopoma (Cantrainea) snail
 Seguenzioidea - Eucyclidae
Cidarina antiquua n. sp. snail
 Lepetellida - Fissurellidae
Emarginula dotyhillsensis n. sp. Squires and Goedert 1995 snail
 Opisthobranchia - Retusidae
Cylichnina tantilla Anderson and Hanna 1925 snail
 Patellida - Lottiidae
Erginus vaderensis Lindberg 1979 limpet
Patelloida tejonensis Gabb 1869 limpet
Bivalvia
 Mytilida - Mytilidae
 Ostreida - Ostreidae
Ostrea sp. Linnaeus 1758 oyster
 Ostreida - Pteriidae
Pteria cf. clarki Weaver and Palmer 1922 pearl oyster
 Pectinida - Propeamussiidae
Parvamussium stanfordense Arnold 1906 mud scallop
 Arcida - Glycymerididae
Glycymeris sp. Da Costa 1778 clam
 Cardiida - Cardiidae
"Nemocardium linteum" = Nemocardium (Nemocardium) linteum
"Nemocardium linteum" = Nemocardium (Nemocardium) linteum Conrad 1855 cockle
 Carditida - Crassatellidae
Crassatella uvasana Conrad 1855 clam
Rhynchonellata
 Terebratulida - Cancellothyrididae
Bryozoa
  -
Bryozoa indet. Ehrenberg 1831
Polychaeta
 Sabellida - Serpulidae
Crinoidea
 Isocrinida - Isocrinidae
Isocrinidae indet. Gislén 1924 Sea lily
Anthozoa
 Scleractinia - Flabellidae
Flabellum clarki Bentson 1943 stony coral
 Scleractinia - Dendrophylliidae
Dendrophyllia tejonensis Nomland 1916 stony coral
Hexactinellida
 Hexactinosa - Euretidae
Eurete goederti glass sponge