Willow Tank Formation

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]

Willow Tank Formation
Stratigraphic range: Late Cretaceous,
TypeGeological formation
UnderliesBaseline Sandstone[1]
OverliesAztec Sandstone[2]
Thicknessunknown
Lithology
PrimaryClaystone, conglomerate, sandstone
Location
Coordinates36°27′22″N 114°31′59″W
Approximate paleocoordinates20.8°N 53.4°W / 20.8; -53.4
RegionNevada
CountryUnited States
ExtentValley of Fire, Nevada

Paleofauna

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

Non-dinosaurs

Dinosaurs

References
  1. 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, Geological Society of America, vol. 11, 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. 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. 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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