Also known as MOR HC-783

Where: Garfield County, Montana (47.7° N, 106.6° W: paleocoordinates 54.4° N, 79.6° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Hell Creek Formation, Late/Upper Maastrichtian (70.6 - 66.0 Ma)

• HC-783 occurs ~20 m below the upper formational contact with the overlying Fort Union Formation (visible in the cliffs above the microsite horizon), placing it in the lower part of the upper third of the Hell Creek Formation

• bed-level stratigraphic resolution

Environment/lithology: fluvial; mudstone

Size class: macrofossils

Collected by D. Fowler (MOR) in 2010

Primary reference: D. W. Fowler, J. P. Wilson, E. A. Freedman Fowler, C. R. Noto, D. Anduza and J. R. Horner. 2020. Trierarchuncus prairiensis gen. et sp. nov., the last alvarezsaurid: Hell Creek Formation (uppermost Maastrichtian), Montana. Cretaceous Research 116:104560 [P. Mannion/P. Mannion]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 217035: authorized by Philip Mannion, entered by Philip Mannion on 19.01.2021

Creative Commons license: CC BY (attribution)