Judith River Group

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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

  1. ↑ Sternberg, Charles H. (1903). "Notes on the Judith River Group" . Science. 17 (439): 870–872. doi:10.1126/science.17.439.870.b. ISSN   0036-8075. JSTOR   1629928 . Retrieved 15 November 2024.
  2. ↑ 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.
  3. ↑ 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. PMC   10810474 . PMID   38271406.
  4. ↑ 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.
  5. ↑ 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" (PDF). Journal of Paleontology. 76 (4): 751–763. doi:10.1666/0022-3360(2002)076<0751:STABTF>2.0.CO;2. ISSN   0022-3360.
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