Sisters Rocks (Jurassic of the United States)

Where: Curry County, Oregon (42.6° N, 124.4° W: paleocoordinates 38.8° N, 70.7° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Otter Point Formation, Tithonian (152.1 - 145.0 Ma)

• "latest Jurassic (Portlandian-Purbeckian)"

• bed-level stratigraphic resolution

Environment/lithology: marine; metamorphosed, gray mudstone and lithified, sandy wackestone

• "markedly deformed dark gray mudstones and interstratified turbidite-type graywacke sandstones."

Size class: macrofossils

Collected by Norman V. Peterson in 1961

Primary reference: C. L. Camp and J. G. Koch. 1966. Late Jurassic ichthyosaur from coastal Oregon. Journal of Paleontology 40(1):204-205 [M. Carrano/H. Street]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 102275: authorized by Matthew Carrano, entered by Hallie Street on 12.01.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Ichthyosauria - Ichthyosauridae
Ichthyosaurus californicus Camp 1942 ichthyosaur
Rostrum
Bivalvia
 Pectinida - Buchiidae
Buchia piochii Gabb 1864 scallop