Locality 31 - Empire Fm (Pliocene of the United States)

Where: Coos County, Oregon (43.3° N, 124.3° W: paleocoordinates 43.2° N, 123.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Empire Formation, Early/Lower Pliocene (5.3 - 3.6 Ma)

• STRATIGRAPHIC RELATIONS: From the Empire Fm, which is overlain by the Elk River Fm. THICKNESS: From bed within formation that reaches a thickness of 500 ft. AGE: Miocene according to Arnold and Hannibal (1913). More recent publications (Hertlein and Crickmay, 1925) indicate an Early Pliocene age. STRATIGRAPHIC POSITION: From massive shale (upper portion) within formation.

• bed-level stratigraphic resolution

Environment/lithology: coastal; poorly lithified shale

• ENVIRONMENT: Not stated, but appears to be shallow marine, siliciclastic.
• SPECIFIC LITHOLOGY: Massive shale. LITHIFICATION: Poorly lithified, given facies description and age.

Size class: macrofossils

Collection methods: surface (in situ),

• COLLECTOR: H. Hannibal (c 1910's). REPOSITORY: Unknown, not stated.

Primary reference: R. Arnold and H. Hannibal. 1913. The marine Tertiary stratigraphy of the North Pacific coast of America. Proceedings of the American Philosophical Society 52(212):559-605 [A. Hendy/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 71147: authorized by Austin Hendy, entered by Austin Hendy on 20.04.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for bivalvia, gastropoda, scaphopoda, brachiopoda and echinodermata. NOMENCLATURE: Not an authoritative publication, and antiquated nomenclature, but with species-level assignments.
Show authors, comments, and common names
Chondrichthyes
 Lamniformes - Lamnidae
Isurus planus
Isurus planus Agassiz 1856 mackerel shark