CSUN Loc. 1555 - Grays Harbor [Crescent Fm] (Eocene of the United States)

Where: Grays Harbor County, Washington (47.3° N, 123.5° W: paleocoordinates 51.3° N, 103.9° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Crescent Formation, Ypresian (56.0 - 47.8 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; poorly lithified, pebbly, green, argillaceous, conglomeratic sandstone

• the main macrofossiliferous sedimentary unit is approximately 100 m thick and consists mostly of dark green, very fine to medium basaltic sandstone with rounded to subrounded grains. near the base of the unit, pebble conglomerates grade rapidly upward into coarse sandstone. intermixed with fossils are subrounded basaltic clasts that range in size from granule to medium. there are also some large pebble-sized lumpy calcareous nodules. the matrix of the pebble conglomerate is mudstone and the amount is variable.

Size class: macrofossils

Reposited in the LACM

Collection methods: bulk,

Primary reference: R. L. Squires and J. L. Goedert. 1994. Macropaleontology of the Eocene Crescent Formation in the Little River Area, Southern Olympic Peninsula, Washington. Contributions in Science (Natural History Museum of Los Angeles County) 444:1-32 [A. Miller/K. Layou/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 5547: authorized by Arnold Miller, entered by Karen Layou on 13.10.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Dentimitra cretacea
Rhynchonellata
 Terebratulida - Cancellothyrididae
Terebratulina weaveri
Terebratulina weaveri
Terebratulina unguicula weaveri
Bivalvia
 Cardiida - Cardiidae
"Nemocardium linteum" = Nemocardium (Nemocardium) linteum
"Nemocardium linteum" = Nemocardium (Nemocardium) linteum Conrad 1855 cockle
 Ostreida - Malleidae
Nayadina batequensis
Nayadina batequensis Squires 1990 oyster
 Ostreida - Ostreidae
Ostrea sp.
Ostrea sp. Linnaeus 1758 oyster
 Pectinida - Propeamussiidae
Parvamussium sp.
Parvamussium sp. Sacco 1897 mud scallop
 Pectinida - Pectinoidae
Spondylus carlosensis
Spondylus carlosensis Anderson 1905 scallop
 Arcida - Arcidae
Barbatia sp.
Barbatia sp. Gray 1842 clam
Barbatia sp. aff. B. landesi
Gastropoda
 Patellida - Lottiidae
Erginus vaderensis, Patelloida ? sp., Patelloida sp.
Erginus vaderensis Lindberg 1979 limpet
Patelloida ? sp. Quoy 1834 limpet
Patelloida ? sp. cf. P. vokesi
Patelloida sp. Quoy 1834 limpet
 Neotaenioglossa - Calyptraeidae
Calyptraea diegoana
Calyptraea diegoana Conrad 1855 slipper shell
 Neogastropoda - Conidae
Conus sp.
Conus sp. Linnaeus 1758 cone shell
 Lepetellida - Fissurellidae
Diodora sp.
Diodora sp. Gray 1821 snail
 Trochoidea - Turbinidae
Homalopoma sp.
Homalopoma sp. Carpenter 1864 snail
Homalopoma sp. aff. H. wattsi
Anthozoa
 Scleractinia - Flabellidae
Flabellum californicum
Flabellum californicum Vaughan 1900 stony coral