Judith River Group
The Judith River Group is a group of geologic formations in western North America dating from the late Cretaceous and noted as a site for the extensive excavation of dinosaur fossils.[1] The formation is named after the Judith River in Montana. The group is also called the Judith River Wedge.[2] It is stratigraphically equivalent with the Belly River Group in Alberta.[3][4]
It comprises the Judith River Formation in north central Montana, as well as the Foremost, Oldman, and Dinosaur Park formations in Alberta and Saskatchewan in Canada.[5] The wedge is exposed discontinuously in river drainages.
References
[edit]- ^ Sternberg, Charles H. (1903). "Notes on the Judith River Group". Science. 17 (439): 870–872. ISSN 0036-8075. Retrieved 15 November 2024.
- ^ Wilson, John P.; Fowler, Denver W. (2 December 2021). "The easternmost occurrence of Saurornitholestes from the Judith River Formation, Montana, indicates broad biogeographic distribution of Saurornitholestes in the Western Interior of North America". Historical Biology. 33 (12): 3302–3306. doi:10.1080/08912963.2020.1862828. ISSN 0891-2963. Retrieved 15 November 2024.
- ^ Eberth, David A. (25 January 2024). "Stratigraphic architecture of the Belly River Group (Campanian, Cretaceous) in the plains of southern Alberta: Revisions and updates to an existing model and implications for correlating dinosaur-rich strata". PLOS ONE. 19 (1): e0292318. doi:10.1371/journal.pone.0292318. ISSN 1932-6203. Retrieved 15 November 2024.
{{cite journal}}: CS1 maint: unflagged free DOI (link) - ^ Rogers, Raymond R.; Eberth, David A.; Ramezani, Jahandar (28 July 2023). "The "Judith River−Belly River problem" revisited (Montana-Alberta-Saskatchewan): New perspectives on the correlation of Campanian dinosaur-bearing strata based on a revised stratigraphic model updated with CA-ID-TIMS U-Pb geochronology". Geological Society of America Bulletin. doi:10.1130/B36999.1. Retrieved 15 November 2024.
- ^ Sankey, Julia T.; Brinkman, Donald B.; Guenther, Merrilee; Currie, Philip J. (July 2002). "Small theropod and bird teeth from the late Cretaceous (late Campanian) Judith River Group, Alberta". Journal of Paleontology. 76 (4): 751–763. doi:10.1666/0022-3360(2002)076<0751:STABTF>2.0.CO;2. ISSN 0022-3360.
External links
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