Where: Phillips County, Montana (48.6° N, 107.8° W: paleocoordinates 55.2° N, 73.3° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: McClelland Ferry Member (Judith River Formation), Middle Campanian (83.5 - 70.6 Ma)

• lower/regressive part of formation, near contact w/Claggett Fm., estimated at approx. 78 Ma

• bed-level stratigraphic resolution

Environment/lithology: fluvial-deltaic; poorly lithified sandstone

Size class: macrofossils

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

Primary reference: L. Grande and E. J. Hilton. 2006. An exquisitely preserved skeleton representing a primitive sturgeon from the Upper Cretaceous Judith River Formation of Montana (Acipenseriformes: Acipenseridae: n. gen. and sp.). The Paleontological Society Memoir 65, Journal of Paleontology 80(4, suppl.):1-39 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 69281: authorized by Matthew Carrano, entered by Matthew Carrano on 23.02.2007

Creative Commons license: CC BY (attribution)