ammonites
SE Utah/Montezuma Creek (Jurassic of the United States)

Where: Utah (37.3° N, 109.4° W: paleocoordinates 33.2° N, 56.0° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Brushy Basin Member (Morrison Formation), Late/Upper Jurassic (161.2 - 145.5 Ma)

• member-level stratigraphic resolution

Environment/lithology:

Size class: macrofossils

Preservation: cast, adpression, permineralized

Collection methods: surface (float), surface (in situ), mechanical,

Primary reference: W. D. Tidwell. 1990. Preliminary report on the megafossil flora of the Upper Jurassic Morrison Formation. Hunteria 2(8):1-11 [A. Rees/D. Sunderlin/D. Sunderlin] more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 24797: authorized by Allister Rees, entered by Dave Sunderlin on 20.08.2002