Adak Island loc. 2 (Eocene of the United States)

Where: Alaska (52.0° N, 176.6° W: paleocoordinates 52.0° N, 176.6° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Narizian foram zone, Andrew Lake Formation, Late/Upper Eocene (37.2 - 33.9 Ma)

• about 350 meters above the formation's base; age based on foram assemblages

Environment/lithology: marine; shale

• "turbidite deposition in a marine basin"
• siliceous shale and calcareous shale

Size classes: macrofossils, mesofossils, microfossils

Primary reference: D. W. Scholl, H. G. Greene, and M. S. Marlow. 1970. Eocene age of the Adak 'Paleozoic (?)' Rocks, Aleutian Islands, Alaska. Geological Society America Bulletin 81(12):3583-3592 [P. Holroyd/P. Holroyd]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 189957: authorized by Patricia Holroyd, entered by Patricia Holroyd on 23.11.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

• sponge spicules noted in text
 Lituolacea - Haplophragmoiidae
Haplophragmoides sp. Cushman 1910
 Lituolacea - Lituolidae
 Planorbulinacea - Cibicididae
 Buliminacea - Uvigerinidae
 Rotaliacea - Rotaliidae
Gyroidina cf. orbicularis d'Orbigny 1865
ssp. planata
 Astrorhizacea - Bathysiphonidae
Bathysiphon sp. Sars 1872
Plectofrondicularia cf. packardi Cushman and Schenck 1928
ssp. packardi and multilineata
 Pectinida - Pectinoidae
? Delectopecten sp. Stewart 1930 scallop
 Polymixiiformes - Polymixiidae
Parapolymixia cf. californica David 1946 beardfish