Fossil remains of dinosaurs, including tyrannosaurs, as well as large marine reptiles, such as mosasaurs, have been recovered from the formation.[2]
Lithology
The Fox Hills Formation consists of marginal marine yellow to grey sandstone with shale interbeds.[1][3] It was deposited as a regressive sequence of barrier islands during the retreat of the Western Interior Seaway in Late Cretaceous time.[4] In its eastern extents, the formation is underlain by the marine Pierre Shale in the United States and by the equivalent Bearpaw Formation in Canada, while in western ranges in Montana and Wyoming it overlies the Lewis Shale. The Fox Hills is overlain by continental sediments of the Laramie Formation in Colorado and the Lance Formation in Wyoming, the later being the equivalent of the overlying Hell Creek Formation in Montana.[1]
^ abcdefg"Geologic Unit: Fox Hills". National Geologic Database. Geolex — Significant Publications. United States Geological Survey. Retrieved 2017-02-13.
^Getman, Myron RC (1994). "Occurrences of Mosasaur and other reptilian fossil remains from the Fox Hills Formation (Maastrichtian: late Cretaceous) of North Dakota". St. Lawrence University Dept. of Geology theses. {{cite journal}}: Cite journal requires |journal= (help)
^Lexicon of Canadian Geologic Units. "Fox Hills Formation". Archived from the original on 2013-01-12. Retrieved 2010-02-01.
^Henry W. Roehler (1993). "Stratigraphy of the Upper Cretaceous Fox Hills Sandstone and Adjacent Parts of the Lewis Shale and Lance Formation, East Flank of the Rock Springs Uplift, Southwest Wyoming". U.S. Geological Survey Professional Paper. Washington: United States Government Printing Office (1532).
This article about a specific stratigraphicformation in the United States is a stub. You can help Wikipedia by expanding it.
hills, formation, cretaceous, geologic, formation, northwestern, great, plains, north, america, present, from, alberta, north, colorado, south, stratigraphic, range, late, cretaceousa, ridge, capped, sandstone, west, limon, coloradotypegeological, formationuni. The Fox Hills Formation is a Cretaceous geologic formation in the northwestern Great Plains of North America It is present from Alberta on the north to Colorado in the south Fox Hills FormationStratigraphic range Late CretaceousA ridge capped by a sandstone bed of the Fox Hills Formation west of Limon ColoradoTypeGeological formationUnit ofMontana Group MT ND Sub unitsFairpoint member SD Trail City member ND SD Timber Lake ND SD Lincoln member CO etc UnderliesLance WY Hell Creek MT 1 Laramie Formation CO OverliesPierre USA Bearpaw CAN 1 Lewis Shale WY MT 1 Thickness75 225 feetLithologyPrimarySandstoneOtherShaleLocationRegionAlberta Colorado Montana North Dakota South Dakota and WyomingCountryUnited States CanadaType sectionNamed forFox Hills between Cheyenne and Moreau Rivers South DakotaNamed byMeek and Hayden 1 Year defined1862 1 Fossil remains of dinosaurs including tyrannosaurs as well as large marine reptiles such as mosasaurs have been recovered from the formation 2 Lithology EditThe Fox Hills Formation consists of marginal marine yellow to grey sandstone with shale interbeds 1 3 It was deposited as a regressive sequence of barrier islands during the retreat of the Western Interior Seaway in Late Cretaceous time 4 In its eastern extents the formation is underlain by the marine Pierre Shale in the United States and by the equivalent Bearpaw Formation in Canada while in western ranges in Montana and Wyoming it overlies the Lewis Shale The Fox Hills is overlain by continental sediments of the Laramie Formation in Colorado and the Lance Formation in Wyoming the later being the equivalent of the overlying Hell Creek Formation in Montana 1 See also Edit Earth sciences portal Paleontology portal Dinosaurs portalList of dinosaur bearing rock formations List of stratigraphic units with indeterminate dinosaur fossilsReferences Edit a b c d e f g Geologic Unit Fox Hills National Geologic Database Geolex Significant Publications United States Geological Survey Retrieved 2017 02 13 Getman Myron RC 1994 Occurrences of Mosasaur and other reptilian fossil remains from the Fox Hills Formation Maastrichtian late Cretaceous of North Dakota St Lawrence University Dept of Geology theses a href Template Cite journal html title Template Cite journal cite journal a Cite journal requires journal help Lexicon of Canadian Geologic Units Fox Hills Formation Archived from the original on 2013 01 12 Retrieved 2010 02 01 Henry W Roehler 1993 Stratigraphy of the Upper Cretaceous Fox Hills Sandstone and Adjacent Parts of the Lewis Shale and Lance Formation East Flank of the Rock Springs Uplift Southwest Wyoming U S Geological Survey Professional Paper Washington United States Government Printing Office 1532 This article about a specific stratigraphic formation in the United States is a stub You can help Wikipedia by expanding it vte This article about a specific stratigraphic formation in Canada is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Fox Hills Formation amp oldid 1095353945, wikipedia, wiki, book, books, library,
