Where: Bowman County, North Dakota (46.2° N, 103.4° W: paleocoordinates 52.4° N, 76.2° W)

• coordinate based on political unit

When: Hell Creek Formation, Maastrichtian (72.1 - 66.0 Ma)

• This site includes the

•transition point between Cretaceous and Paleocene time and is

•thought by some authors to have fossilized traces of the

•Chicxulub impact

Environment/lithology: terrestrial; sandstone

Size class: macrofossils

Collection methods: quarrying,

Primary reference: E. J. Hilton and L. Grande. 2022. Late Cretaceous sturgeons (Acipenseridae) from North America, with two new species from the Tanis site in the Hell Creek Formation of North Dakota . Journal of Paleontology [P. Holroyd/P. Holroyd]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 227364: authorized by Patricia Holroyd, entered by Patricia Holroyd on 08.10.2022

Creative Commons license: CC BY (attribution)