Also known as Schooner Point

Where: Lincoln County, Oregon (44.7° N, 124.1° W: paleocoordinates 44.5° N, 118.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Astoria Formation, Burdigalian (20.4 - 16.0 Ma)

• early Miocene

•uncomformably overlain by Depoe Bay Basalt, dated at 16 +/- 0.65, 15.2 +/- 0.6, and 14.5 +/- 1.0 Ma using KA; dates are from different localities and it is not clear which is most relevant; old constants used

•overlain by the slightly higher Cape Foulweather Basalt = Gingko Basalt, dated at 15.4 +/- 0.3 Ma (mehtod?): Prothero et al. 2001

•in a reversed polarity zone interpreted as C5Cr: Prothero et al. 2001

• bed-level stratigraphic resolution

Environment/lithology: marine; concretionary, brown, gray sandstone

Size class: macrofossils

Collection methods: surface (float)

Primary reference: M. C. Coombs. 1979. Tylocephalonyx, a new genus of North American dome-skulled chalicotheres (Mammalia, Perissodactyla). Bulletin of the American Museum of Natural History 164(1):1-64 [J. Alroy/J. Alroy/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 18929: authorized by John Alroy, entered by John Alroy on 26.03.1995, edited by Mark Uhen

Creative Commons license: CC BY (attribution)