Richardoestesia isosceles Sankey, 2001

Remarks

• Collection:    Lee Garrison
• Formation:   Montana Group, Hell Creek Formation
• Location:      Montana

General Info

Synonyms (older names and misidentifications)

• 2001 Richardoestesia isosceles Sankey, 2001

• 2002 Richardoestesia isosceles Sankey; Sankey, Brinkman, Guenther & Currie

Stratigraphic Occurrence

• Montana Group, Hell Creek Formation of Montana

• Judith River Group Alberta, Canada (specific formation not reported by Sankey et al. but includes the Foremost, Oldman and Dinosaur Park Formations)

• Milk River Formation of Alberta, Canada

• Scollard Formation of Alberta, Canada

• Aguja Formation of West Texas

Age

• Richardoestesia isosceles Sankey ranges from the late Middle Campanian Stage to the very Late Maastrichtian Stage (~79–66 mya).

Geographic Occurrence (not an all-inclusive list)

• Alberta, Canada

• Brewster County, TX

• Carter County, MT

Remarks

       For identification and descriptions, see:

• Sankey, J. T.; Brinkman, D. B.; Guenther, M.; Currie, P. J.  2002.  Small Theropod and Bird Teeth from the Late Cretaceous (Late Campanian) Judith River Group, Alberta.  Journal of Paleontology 76 (4), 757–760, fig's 5.9–5.24.