ammonites
Sinbad Valley (Jurassic to of the United States)

Where: Mesa County, Colorado (38.5° N, 109.0° W: paleocoordinates 34.6° N, 55.8° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Morrison Formation, Kimmeridgian to Kimmeridgian (155.7 - 145.5 Ma)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by Look in the 1930s

Collection methods: quarrying, mechanical,

Primary reference: J. R. Foster. 2005. New juvenile sauropod material from western Colorado, and the record of juvenile sauropods from the Upper Jurassic Morrison Formation. In K. Carpenter and V. Tidwell (eds.), Thunder-Lizards: The Sauropodomorph Dinosaurs. Indiana University Press, Bloomington 141-153 [M. Carrano/M. Carrano/M. Carrano] more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 68097: authorized by Matt Carrano, entered by Matt Carrano on 03.01.2007