Photos • Location
| Willow Tank Formation | |
|---|---|
| Stratigraphic range: Late Cretaceous, | |
| 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 |
| Approximate 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]
All paleofauna listed are taken from a list compiled by Bonde (2008a) [3] unless stated otherwise.
- cf. Adocus
- Baena sp.
- Ceratodus sp.
- Coprolites (indet.)
- Crocodyliformes indet.
- Gastropoda indet.
- Holostei indet.
- Lepisosteidae indet.
- Naomichelys sp.
- Scoyenia sp.
- Trionychidae (?) indet.
- Dromaeosauridae indet.
- Iguanodontia indet.
- Macroelongatoolithus carlylei [1]
- Nevadadromeus schmitti [7]
- Ornithopoda indet. [8]
- Theropoda indet.
- Titanosauriformes indet.
- Thyreophora indet.
- Tyrannosauroidea indet.
- ^ a b 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
- ^ 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.
- ^
a
b
c 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) - ^ "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).
- ^ "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).
- ^ "Muddy Mountains G-E-M resources area (GRA no. NV-34) : Technical report (WSA NV 050-0229) : Final report" (PDF).
- ^ a b 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.
- ^ 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.
 | This article about a specific stratigraphic formation is a stub. You can help Wikipedia by expanding it. |
| Willow Tank Formation | |
|---|---|
| Stratigraphic range: Late Cretaceous, | |
| 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 |
| Approximate 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]
All paleofauna listed are taken from a list compiled by Bonde (2008a) [3] unless stated otherwise.
- cf. Adocus
- Baena sp.
- Ceratodus sp.
- Coprolites (indet.)
- Crocodyliformes indet.
- Gastropoda indet.
- Holostei indet.
- Lepisosteidae indet.
- Naomichelys sp.
- Scoyenia sp.
- Trionychidae (?) indet.
- Dromaeosauridae indet.
- Iguanodontia indet.
- Macroelongatoolithus carlylei [1]
- Nevadadromeus schmitti [7]
- Ornithopoda indet. [8]
- Theropoda indet.
- Titanosauriformes indet.
- Thyreophora indet.
- Tyrannosauroidea indet.
- ^ a b 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
- ^ 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.
- ^
a
b
c 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) - ^ "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).
- ^ "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).
- ^ "Muddy Mountains G-E-M resources area (GRA no. NV-34) : Technical report (WSA NV 050-0229) : Final report" (PDF).
- ^ a b 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.
- ^ 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.
|
| This article about a specific stratigraphic formation is a stub. You can help Wikipedia by expanding it. |