Also known as M1159

Where: Aleutians East County, Alaska (55.3° N, 160.7° W: paleocoordinates 58.5° N, 154.7° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Stepovak Formation, Oligocene (33.9 - 23.0 Ma)

• The Stepovak Formation is exposed at West Head where it reaches in excess of 150 feet in thickness and comprises brecias, volcanics and sandstone. Probably late middle Oligocene

• bed-level stratigraphic resolution

Environment/lithology: marine; poorly lithified, brown sandstone and pebbly, shelly/skeletal conglomerate

Size class: macrofossils

Collection methods: Collections examined by F.S. MacNeil and D. Taylor (USGS), 1962. Collections are reposited at USGS Menlo Park, or presumably USNM (not reported)

Primary reference: C.A. Burk. 1965. Geology of the Alaska Peninsula-island arc and continental margin (Part 1). Geological Society of America Memoir 99(1) [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 44101: authorized by Austin Hendy, entered by Austin Hendy on 01.09.2004

Creative Commons license: CC BY (attribution)