Where: Montana (47.0° N, 110.0° W: paleocoordinates 43.0° N, 54.4° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Morrison Formation, Kimmeridgian to Kimmeridgian (157.3 - 145.0 Ma)

• correlative with Canadian Kootenay, Nikanassin, Tantalus, and Hazelton Group. Not the Brushy Basin/Salt Wash as these members do not exist in Montana.

• formation-level stratigraphic resolution

Environment/lithology: fluvial-lacustrine; lithology not reported

Size class: macrofossils

Preservation: cast, adpression, permineralized

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

• composite of 4 localities in "central Montana"

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 24668: authorized by Allister Rees, entered by Dave Sunderlin on 15.08.2002

Creative Commons license: CC BY (attribution)