Saanich Fm - Alki Point/Bainbridge Island (Pleistocene of the United States)

Where: King County, Washington (47.6° N, 122.4° W: paleocoordinates 47.6° N, 122.4° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Saanich Formation, Late/Upper Pleistocene (0.1 - 0.0 Ma)

• STRATIGRAPHIC RELATIONS: From the Saanich Fm, which overlies Oligocene deposits (Sooke Fm?). THICKNESS: Unknown thickness, though presumably very thin as a terrace deposit. AGE: Upper Pleistocene according to Arnold and Hannibal (1913). STRATIGRAPHIC POSITION: Composite list for fauna known from a limited number of outcrops of the Saanich Fm.

• formation-level stratigraphic resolution

Environment/lithology: coastal; unlithified siliciclastic sediments

• ENVIRONMENT: Not stated, but appears to be shallow marine, siliciclastic. TEMPERATURE: Contains numerous cool-water taxa.
• SPECIFIC LITHOLOGY: Unknown lithology, but presumably siliciclastic. LITHIFICATION: Presumablt unlithified given description in text and age.

Size class: macrofossils

Collection methods: COLLECTOR: Unknown, possibly multiple collectors, including the authors. REPOSITORY: Unknown, not stated.

Primary reference: R. Arnold and H. Hannibal. 1913. The marine Tertiary stratigraphy of the North Pacific coast of America. Proceedings of the American Philosophical Society 52(212):559-605 [A. Hendy/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 71059: authorized by Austin Hendy, entered by Austin Hendy on 16.04.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Not exhaustive, but containing characteristic (numerous) bivalvia and gastropoda. NOMENCLATURE: Not an authoritative publication, and antiquated nomenclature, but with species-level assignments.
Gastropoda
 Sorbeoconcha - Naticidae
Polinices lewisii Gould 1847 moon snail
"Natica clausa" = Cryptonatica affinis Gmelin 1791 moon snail
 Neogastropoda - Buccinidae
Buccinum percrassum Dall 1881 true whelk
 Neogastropoda - Muricidae
Nucella lamellosa Gmelin 1791 murex snail
Bivalvia
 Mytilida - Mytilidae
Mytilus edulis Linnaeus 1758 mussel
 Pectinida - Pectinoidae
"Pecten hastatus" = Chlamys hastata, "Pecten islandicus" = Chlamys (Chlamys) islandica
"Pecten hastatus" = Chlamys hastata Sowerby 1842 scallop
SUBSPECIES: P. hastatus hericeus
"Pecten islandicus" = Chlamys (Chlamys) islandica Müller 1776 scallop
 Cardiida - Cardiidae
"Serripes groenlandicus" = Serripes (Serripes) groenlandicus, "Clinocardium (Clinocardium) nuttallii" = Clinocardium (Clinocardium) nuttallii, "Cardium decoratum" = Clinocardium (Clinocardium) nuttallii
"Serripes groenlandicus" = Serripes (Serripes) groenlandicus Mohr 1786 cockle
"Clinocardium (Clinocardium) nuttallii" = Clinocardium (Clinocardium) nuttallii Conrad 1837 cockle
"Cardium decoratum" = Clinocardium (Clinocardium) nuttallii Conrad 1837 cockle
 Cardiida - Tellinidae
Macoma nasuta, "Macoma inquinata" = Macoma (Macoma) inquinata, "Macoma calcarea" = Macoma (Macoma) calcarea
Macoma nasuta Conrad 1837 tellin clam
"Macoma inquinata" = Macoma (Macoma) inquinata Deshayes 1855 tellin clam
"Macoma calcarea" = Macoma (Macoma) calcarea Gmelin 1792 tellin clam
 Cardiida - Veneridae
"Paphia staminea" = Leukoma staminea, "Paphia tenerrima" = Callithaca tenerrima, Saxidomus giganteus
"Paphia staminea" = Leukoma staminea Conrad 1837 venus clam
"Paphia tenerrima" = Callithaca tenerrima Carpenter 1857 venus clam
Saxidomus giganteus Deshayes 1839 venus clam
 Cardiida - Mactridae
"Schizothaerus nuttalli" = Tresus nuttallii
"Schizothaerus nuttalli" = Tresus nuttallii Conrad 1837 clam
 Pholadida - Myidae
"Mya truncata" = Mya (Mya) truncata, "Mya arenaria" = Mya (Arenomya) arenaria
"Mya truncata" = Mya (Mya) truncata Linnaeus 1758 softshell clam
"Mya arenaria" = Mya (Arenomya) arenaria Linnaeus 1758 softshell clam
 Hiatellida - Hiatellidae
"Saxicava arctica" = Hiatella arctica
"Saxicava arctica" = Hiatella arctica Linnaeus 1767 clam