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One Mile North of Wannagan Creek Quarry (Paleocene of the United States)

Where: Billings County, North Dakota (47.0° N, 103.7° W: paleocoordinates 52.2° N, 83.0° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Bullion Creek Formation, Late/Upper Paleocene (58.7 - 55.8 Ma)

• bed-level stratigraphic resolution

Environment/lithology: lacustrine; gray, silty claystone

• "lacustrine origin"
• "gray silty clay"

Size class: macrofossils

Collection methods: quarrying, mechanical,

• "Mechanical preparation" to remove matrix

Primary reference: B. R. Erickson. 1985. Aspects of some anatomical structures of Champsosaurus (Reptilia: Eosuchia). Journal of Vertebrate Paleontology 5(2):111-127 [J. Alroy/J. Alroy/J. Alroy] more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 27640: authorized by John Alroy, entered by John Alroy on 16.12.2002, edited by Alexander Kourmadas

Creative Commons license: CC BY (attribution)