Harrison Bay (D306) (Pleistocene of the United States)

Also known as USGS D306

Where: North Slope County, Alaska (70.1° N, 151.4° W: paleocoordinates 70.2° N, 151.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Gubik Formation, Early/Lower Pleistocene (2.6 - 0.8 Ma)

• Blanket deposit of gravel, sand, silt, and clay called the Gubik Formation rests confortably on the Tertiary. Assigned to the Pleistocene (originally to the Pliocene).

• bed-level stratigraphic resolution

Environment/lithology: coastal; unlithified sandstone and siltstone

• Fossils collected from as high as 320ft asl. Terrace deposits.
• Gravel, sand, silt, and clay.

Size class: macrofossils

Reposited in the USNM

Collection methods: quarrying,

• Collections held at USNM, University of California, USGS (Washington) and USGS (Denver)

Primary reference: F.S. MacNeil. 1957. Cenozoic Megafossils of Northern Alaska. United States Geological Survey Professional Paper 294(C):99-126 [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 38007: authorized by Austin Hendy, entered by Austin Hendy on 30.03.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Representative of invertebrates
 Sessilia - Balanidae
Balanus sp. Da Costa 1778 barnacle
Annelida indet. Lamarck 1809
 Pectinida - Pectinoidae
"Chlamys hindsii" = Chlamys rubida
"Chlamys hindsii" = Chlamys rubida Hinds 1845 scallop
 Carditida - Astartidae
"Astarte broweri" = Astarte arctica
"Astarte broweri" = Astarte arctica Gray 1824 clam
 Carditida - Carditidae
"Cardita (Cyclocardia) crebricostata" = Cyclocardia (Cyclocardia) crebricostata
"Cardita (Cyclocardia) crebricostata" = Cyclocardia (Cyclocardia) crebricostata Krause 1885 clam
 Cardiida - Mactridae
"Spisula polynyma" = Mactromeris polynyma
"Spisula polynyma" = Mactromeris polynyma Stimpson 1860 clam
Subspecies: Spisula polynyma voyi
 Cardiida - Cardiidae
"Serripes groenlandicus" = Serripes (Serripes) groenlandicus
"Serripes groenlandicus" = Serripes (Serripes) groenlandicus Mohr 1786 cockle
 Hiatellida - Hiatellidae
Cyrtodaria kurriana Dunker 1861 clam
"Saxicava arctica" = Hiatella (Hiatella) arctica Linnaeus 1767 clam
 Neogastropoda - Buccinidae
 Neogastropoda - Turridae
Antiplanes cf. perversa Gabb 1865 turrid
 Naticoidea - Naticidae
"Natica clausa" = Cryptonatica affinis
"Natica clausa" = Cryptonatica affinis Gmelin 1791 moon snail
 Sorbeoconcha - Turritellidae
Tachyrhynchus erosus Couthouy 1838 turret shell
Subspecies: Tachyrhynchus erosus major
  - Neptuneidae