Also known as 77AM24

Where: Alaska (55.2° N, 161.6° W: paleocoordinates 56.7° N, 159.0° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Bear Lake Formation, Middle Miocene (16.0 - 11.6 Ma)

• STRATIGRAPHIC RELATIONS: From Bear Lake Fm, which is presumed to overlie the Stepovak Fm (Paleogene), though the contact is not exposed. AGE: Middle Miocene. 15-16 Mas, or earliest Middle Miocene based on the presence of Turritella (Hataiella) sagai. This is the greatest known age for any Bear Lake outcrop. An overlying andesitic flow has been radiometrically dated at 10.4 Ma. STRATIGRAPHIC POSITION: Unknown position within formation.

• bed-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; lithified, coarse-grained sandstone

Size class: macrofossils

Reposited in the LACM, USNM

Collection methods: quarrying,

• COLLECTOR: L. Marincovich, Jr (1977). REPOSITORY: USGS (Menlo Park), LACM, USNM

Primary reference: L. Marincovich. 1988. Recognition of an earliest Middle Miocene warm-water event in a southestern Alaskan molluscan fauna. Saito-Ho-on Kai Special Publication 1:1-24 [A. Hendy/A. Hendy/P. Wagner]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 67917: authorized by Austin Hendy, entered by Austin Hendy on 16.12.2006

Creative Commons license: CC BY (attribution)