USGS Loc. M251, Grave Creek (Cretaceous of the United States)

Where: Jackson County, Oregon (42.6° N, 123.6° W: paleocoordinates 42.9° N, 76.6° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Early/Lower Albian (112.0 - 109.0 Ma)

• STRATIGRAPHIC RELATIONS: From unnamed lithostratigraphic unit. AGE: late Early-Middle Albian, on the basis of ammonoid biostratigraphy. STRATIGRAPHIC POSITION: From upper part of sandstone unit.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified sandstone

• SPECIFIC LITHOLOGY: Sandstone. LITHIFICATION: Lithified, on the basis of figured specimens.

Size class: macrofossils

Preservation: cast, mold/impression

Collected by Jones in 1958; reposited in the USNM

Collection methods: surface (in situ),

• COLLECTOR: Jones, 1958. REPOSITORY: USNM.

Primary reference: D. L. Jones. 1960. Lower Cretaceous (Albian) fossils from southwestern Oregon and their paleogeographic significance. Journal of Paleontology 34(1):152-160 [A. Hendy/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 88615: authorized by Austin Hendy, entered by Austin Hendy on 16.04.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for ammonoidea. NOMENCLATURE: Authoritative publication, with somewhat antiquated nomenclature, but with species-resolution identifications.
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Bivalvia
 Trigoniida - Trigoniidae
Megatrigonia (Apiotrigonia) condoni
Cephalopoda
 Ammonitida - Mojsisovicsiidae
Oxytropidoceras sp.
Oxytropidoceras sp. Stieler 1920 ammonite