Also known as AMNH Sinclair Expedition

Where: Sweetwater County, Wyoming (41.6° N, 109.2° W: paleocoordinates 48.9° N, 78.5° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Almond Formation (Mesaverde Group), Campanian (83.5 - 70.6 Ma)

• about 30.5 m above Ericson Sandstone

• bed-level stratigraphic resolution

Environment/lithology: terrestrial

Size class: macrofossils

Collected by B. Brown in 1937; reposited in the AMNH

Collection methods: quarrying, mechanical,

Primary reference: B. Brown. 1938. The mystery dinosaur. Natural History 38(3):190-202 [M. Carrano/M. Carrano] more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 45861: authorized by Matt Carrano, entered by Matt Carrano on 10.12.2004