Willow Tank Formation

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Willow Tank Formation
Stratigraphic range: Late Cretaceous, Cenomanian
Type Geological formation
Underlies Baseline Sandstone [1]
Overlies Aztec Sandstone [2]
Thicknessunknown
Lithology
Primary Claystone, conglomerate, sandstone
Location
Coordinates 36°27′22″N114°31′59″W / 36.45611°N 114.53306°W / 36.45611; -114.53306
Approximate paleocoordinates 20°48′N53°24′W / 20.8°N 53.4°W / 20.8; -53.4
Region Nevada
Country United States
Extent Valley of Fire, Nevada

The Willow Tank Formation is a geologic formation which outcrops in the U.S. state of Nevada. Initially believed to be of Early Cretaceous (Albian) age, [3] later studies have concluded that it was more likely to be of Late Cretaceous (Cenomanian) age, [4] [5] [6] [7] making it equivalent to the Cloverly and Cedar Mountain Formations. It was deposited in an anastomosed fluvial system. [3]

Contents

Paleofauna

All paleofauna listed are taken from a list compiled by Bonde (2008a) [3] unless stated otherwise.

Non-dinosaurs

Dinosaurs

References

  1. 1 2 Bonde, Joshua W.; Varricchio, David J.; Jackson, Frankie D.; Loope, David B.; Shirk, Aubrey M. (2008b), "Dinosaurs and dunes! Sedimentology and paleontology of the Mesozoic in the Valley of Fire State Park" , GSA Field Guide 11: Field Guide to Plutons, Volcanoes, Faults, Reefs, Dinosaurs, and Possible Glaciation in Selected Areas of Arizona, California, and Nevada, vol. 11, Geological Society of America, pp. 249–262, doi:10.1130/2008.fld011(11), ISBN   978-0-8137-0011-3 , retrieved October 22, 2022
  2. ↑ Longwell, C.R. (1949). "Structure of the Northern Muddy Mountain Area, Nevada". Geological Society of America Bulletin . 60 (5): 923–968. Bibcode:1949GSAB...60..923L. doi:10.1130/0016-7606(1949)60[923:SOTNMM]2.0.CO;2. ISSN   0016-7606. Wikidata   Q60182382.
  3. 1 2 3 William., Bonde, Joshua (2008a). Paleoecology and taphonomy of the Willow Tank Formation (Albian), Southern Nevada. OCLC   302295902.{{cite book}}: CS1 maint: multiple names: authors list (link)
  4. ↑ "Lake Mead G-E-M resources area (GRA no. NV-35) : Technical report (WSAs NV 050-0231, 050–0233, 050–0235, 050–0236, and 050-0238) : Final report" (PDF).
  5. ↑ "Nellis/Quail Spring G-E-M resources area (GRA no. NV-33) : Technical report (WSAs NV 050-0411, 050-04R-15A, B, and C) : Final report" (PDF).
  6. ↑ "Muddy Mountains G-E-M resources area (GRA no. NV-34) : Technical report (WSA NV 050-0229) : Final report" (PDF).
  7. 1 2 Bonde, Joshua W.; Hall, Rebecca L.; Krumenacker, L. J.; Varricchio, David J. (2022). "Nevadadromeus schmitti (gen. et sp. nov.), a New Basal Neornithischian with Affinities to the Thescelosaurinae, from the Upper Cretaceous (Cenomanian) Willow Tank Formation of Southern Nevada" . Journal of the Arizona-Nevada Academy of Science. 50 (1): 1–8. doi:10.2181/036.050.0101. ISSN   0193-8509. S2CID   252931645.
  8. ↑ Humphrey, Rebecca (2017). "Late Cretaceous Ornithopod Dinosaur Fossil Assmblege from the Willow Tank Formation of Southeastern Nevada" . Geological Society of America Abstracts with Programs. Geological Society of America. doi:10.1130/abs/2017cd-293081.
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