Butte Creek [Abiqua Mbr, Scotts Mills Fm] (Oligocene of the United States)

Where: Marion County, Oregon (45.1° N, 122.6° W: paleocoordinates 44.7° N, 113.6° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Abiqua Member (Scotts Mills Formation), Late/Upper Oligocene (28.4 - 23.0 Ma)

• STRATIGRAPHIC RELATIONS: From the Abiqua Mbr of the Scotts Mills Fm, which conformably underlies the Marquam Mbr of the same formation. AGE: Late Oligocene STRATIGRAPHIC POSITION: From the basal part of the member.

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, tuffaceous, shelly/skeletal limestone

• SPECIFIC LITHOLOGY: Tuffaceous bioclastic limestone. LITHIFICATION: Lithified, on the basis of figured specimens.

Size class: macrofossils

Collected by Linder; reposited in the UCMP

Collection methods: surface (in situ),

• COLLECTOR: R. Linder. REPOSITORY: UCMP, Berkeley.

Primary reference: R. A. Linder, J. W. Durham, and W. N. Orr. 1988. New late Oligocene echinoids from the central western cascades of Oregon. Journal of Paleontology 62(6):945-958 [A. Hendy/A. Hendy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 90569: authorized by Austin Hendy, entered by Austin Hendy on 06.08.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Limited to echinoids, although bivalves and gastropods mentioned to be present. NOMENCLATURE: Authoritative publication, with modern nomenclature, and species-resolution identifications.
Echinoidea
 Temnopleuroida -
Gagaria crenularis n. sp. Linder et al. 1988 sea urchin
 Stomopneustoida - Stomechinidae
Stomechinus dissimilaris n. sp. Linder et al. 1988 sea urchin
 Arbacioida - Arbaciidae
Arbacia abiquaensis n. sp. Linder et al. 1988 sea urchin
 Camarodonta - Toxopneustidae
Lytechinus baldwini n. sp. Linder et al. 1988 sea urchin
 Clypeasteroida - Echinarachniidae
Kewia marquamensis Linder et al. 1988 sand dollar
 Calycina - Phymosomatidae
Glyptocidaris sp. Agassiz 1853 sea urchin
 Salenioida - Saleniidae
Salenia cascadensis n. sp. Linder et al. 1988 sea urchin