Earth:Willow Tank Formation
From HandWiki
| Willow Tank Formation Stratigraphic range: Late Cretaceous, Cenomanian | |
|---|---|
| Type | Geological formation |
| Underlies | Baseline Sandstone[1] |
| Overlies | Aztec Sandstone[2] |
| Thickness | unknown |
| Lithology | |
| Primary | Claystone, conglomerate, sandstone |
| Location | |
| Coordinates | [ ⚑ ] : 36°27′22″N 114°31′59″W / 36.45611°N 114.53306°W |
| Paleocoordinates | [ ⚑ ] 20°48′N 53°24′W / 20.8°N 53.4°W |
| 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]
Paleofauna
All paleofauna listed are taken from a list compiled by Bonde (2008a)[3] unless stated otherwise.
Non-dinosaurs
- cf. Adocus
- Baena sp.
- Ceratodus sp.
- Coprolites (indet.)
- Crocodyliformes indet.
- Gastropoda indet.
- Holostei indet.
- Lepisosteidae indet.
- Naomichelys sp.
- Scoyenia sp.
- Trionychidae (?) indet.
Dinosaurs
- Dromaeosauridae indet.
- Iguanodontia indet.
- Macroelongatoolithus carlylei[1]
- Nevadadromeus schmitti[7]
- Ornithopoda indet.[8]
- Theropoda indet.
- Titanosauriformes indet.
- Thyreophora indet.
- Tyrannosauroidea indet.
References
- ↑ 1.0 1.1 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" (in en), 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) 11: pp. 249–262, doi:10.1130/2008.fld011(11), ISBN 978-0-8137-0011-3, https://pubs.geoscienceworld.org/books/book/919/chapter/4828782/, retrieved 2022-10-22
- ↑ Longwell, C.R., Wikidata Q60182382
- ↑ 3.0 3.1 3.2 William., Bonde, Joshua (2008a). Paleoecology and taphonomy of the Willow Tank Formation (Albian), Southern Nevada. OCLC 302295902. http://worldcat.org/oclc/302295902.
- ↑ "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". https://commons.wikimedia.org/wiki/File: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_(IA_lakemeadgemresou00grea).pdf.
- ↑ "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". https://commons.wikimedia.org/wiki/File: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_(IA_nellisquailsprin00grea).pdf.
- ↑ "Muddy Mountains G-E-M resources area (GRA no. NV-34) : Technical report (WSA NV 050-0229) : Final report". https://commons.wikimedia.org/wiki/File:Muddy_Mountains_G-E-M_resources_area_(GRA_no._NV-34)_-_technical_report_(WSA_NV_050-0229)_-_final_report_(IA_muddymountainsge00grea).pdf.
- ↑ 7.0 7.1 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. https://bioone.org/journals/journal-of-the-arizona-nevada-academy-of-science/volume-50/issue-1/036.050.0101/Nevadadromeus-schmitti-gen-et-sp-nov-a-New-Basal-Neornithischian/10.2181/036.050.0101.full.
- ↑ 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. http://dx.doi.org/10.1130/abs/2017cd-293081.
Template:Chronostratigraphy of Nevada
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