5 km west of Royal Tyrrell Museum (Cretaceous of Canada)

Where: Alberta, Canada (51.5° N, 112.8° W: paleocoordinates 59.2° N, 84.6° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Horsethief Member (Horseshoe Canyon Formation), Early/Lower Maastrichtian (70.6 - 66.0 Ma)

• about 5 m above Daly Coal Seam #7

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithified sandstone and poorly lithified, medium-grained sandstone

• "relatively hard...sandstone capping softer, medium-grained sands"

Size class: macrofossils

Collected by W. Marshall in 1995; reposited in the TMP

Collection methods: surface (in situ), mechanical,

• discovered by Wayne Marshall of East Coulee, AB

Primary reference: P. J. Currie and D. J. Varricchio. 2004. A new dromaeosaurid from the Horseshoe Canyon Formation (Upper Cretaceous) of Alberta, Canada. In P. J. Currie, E. B. Koppelhus, M. A. Shugar, J. L. Wright (eds.), Feathered Dragons. Indiana University Press, Bloomington 112-132 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 92963: authorized by Matthew Carrano, entered by Matthew Carrano on 18.12.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Theropoda - Dromaeosauridae
Atrociraptor marshalli n. gen. n. sp.
Atrociraptor marshalli n. gen. n. sp. Currie and Varricchio 2004 maniraptoran
TMP 95.166.1