Point Lay (D2) (Pleistocene of the United States)

Also known as USGS D2

Where: North Slope County, Alaska (69.3° N, 162.8° W: paleocoordinates 69.5° N, 162.5° 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 38008: authorized by Austin Hendy, entered by Austin Hendy on 30.03.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Representative of invertebrates
 Mytilida - Mytilidae
"Saxicava pholadis" = Mytilus pholadis
"Saxicava pholadis" = Mytilus pholadis Linnaeus 1771 mussel
 Neogastropoda - Buccinidae
Buccinum angulosum Gray 1839 true whelk
 Naticoidea - Naticidae
"Natica ? clausa" = Cryptonatica affinis
"Natica ? clausa" = Cryptonatica affinis Gmelin 1791 moon snail
  - Neptuneidae
Neptunea ventricosa snail
Subspecies: Neptunea ventricosa soluta