Also known as SD-2, St. Onge

Where: Lawrence County, South Dakota (44.5° N, 103.8° W: paleocoordinates 40.0° N, 49.7° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Brushy Basin Member (Morrison Formation), Tithonian (152.1 - 145.0 Ma)

• near top of formation (within 3-4 m)

• bed-level stratigraphic resolution

Environment/lithology: wet floodplain; gray siltstone

Size class: macrofossils

Collected in 1935; reposited in the SDSM

Collection methods: quarrying, mechanical,

Primary reference: J. D. Bump. 1939. Dinosaurs collected by the School of Mines. The Black Hills Engineer 25(4):228-229 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 49630: authorized by Matthew Carrano, entered by Matthew Carrano on 21.04.2005

Creative Commons license: CC BY (attribution)