| De Queen Formation | |
|---|---|
Stratigraphic range: | |
| Type | Geological formation |
| Unit of | Trinity Group |
| Location | |
| Region | Arkansas |
| Country | United States |
| Type section | |
| Named for | De Queen, Sevier County, Arkansas |
| Named by | Hugh Dismore Miser and Albert Homer Purdue [1] |
The De Queen Formation, formerly known as the DeQueen Limestone Member [2] is a Mesozoic geological formation located in southwestern Arkansas and southeastern Oklahoma in the United States. Fossil sauropod and theropod tracks have been reported from the formation. [3] [4] It preserves fossils dating back to the Cretaceous period, [5] particularly the Albian age.
The Glen Rose Formation is a shallow marine to shoreline geological formation from the lower Cretaceous period exposed over a large area from South Central to North Central Texas. The formation is most widely known for the dinosaur footprints and trackways found in the Dinosaur Valley State Park near the town of Glen Rose, Texas, southwest of Fort Worth and at other localities in Central Texas.
The Cloverly Formation is a geological formation of Early and Late Cretaceous age that is present in parts of Montana, Wyoming, Colorado and Utah in the western United States. It was named for a post office on the eastern side of the Bighorn Basin in Wyoming by N.H. Darton in 1904. The sedimentary rocks of formation were deposited in floodplain environments and contain vertebrate fossils, including a diverse assemblage of dinosaur remains. In 1973, the Cloverly Formation Site was designated as a National Natural Landmark by the National Park Service.
The Tiourarén Formation is a geological formation in the Agadez Region of Niger whose strata were originally thought to be Early Cretaceous. However, re-interpretation of the sediments showed that they are probably Middle Jurassic (Bathonian) in age. It is the uppermost unit of the Irhazer Group. Dinosaur remains are among the fossils that have been recovered from the formation.
The Eagle Sandstone, originally the Eagle Formation, is a geological formation in Montana whose strata date back to the Late Cretaceous. It is a light to brownish gray to pale yellow-orange, fine-grained sandstone. It contains areas of crossbedding and local shale members. It contains large sandy calcareous concretions. Its thickness varies from 100 to 350 feet due to the lens nature of the individual sandstone layers and local interbedded sandy shale layers.
The Evanston Formation is a geological formation in Wyoming whose strata date back to the Late Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation. The fossil formation also has the remains of prehistoric mammals from the Paleocene epoch.
The Chico Formation is a geologic formation of the Campanian Age during the Cretaceous Period, found in California and southern Oregon.
The Les Sables de Glos Formation is a sandy Jurassic-age geologic formation in France. Dinosaur remains are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus.
The Mugher Mudstone is a geologic formation located in Ethiopia. It dates to the Tithonian stage of the Late Jurassic. The lithology consists of gypsum, dolomite and shale alternations at the base, overlain by mudstone intercalated with fine to medium grained sandstone.
The Broome Sandstone, formerly known as the Broome Beds, is an Early Cretaceous geologic formation found in Western Australia, and formerly considered part of Dampier Group. Fossil sauropod tracks, belonging to an unknown ichnotaxon, and stegosaur tracks belonging to the ichnogenus and species Garbina roeorum have been reported from the formation.
The Zorillo Formation is a Mesozoic geologic formation in Mexico. Fossil sauropod tracks have been reported from the formation.
The Tecocoyunca Group is a Mesozoic geologic formation in Mexico. Fossil sauropod tracks have been reported from the formation.
The Wagad Formation is a Mesozoic geologic formation in India. Fossil sauropod tracks have been reported from the formation.
The Calcários Micríticos da Serra de Aire is a Bathonian geologic formation in Portugal. Fossil sauropod tracks have been reported from the formation.
The Hensel Formation or Hensel Sand is a Mesozoic geologic formation in Texas. Fossil ornithopod tracks have been reported from the formation.
The Mexcala Formation is a Late Cretaceous geologic formation in Guerrero state, southern Mexico.
The Irhazer Shale or Irhazer II Formation is a Middle Jurassic geologic formation of the Irhazer Group in the Agadez Region of Niger. Fossil ornithopod tracks have been reported from the formation. The dinosaur Spinophorosaurus is known from the formation.
The Black Creek Group is a geologic group in North Carolina. It preserves fossils dating back to the Late Cretaceous period.
The Ferron Sandstone Member of the Mancos Shale is a geologic unit in Utah. It preserves fossils dating back to the Cretaceous period; and more specifically the middle Turonian.
The Argiles de Châtillon is a geologic formation in France. It preserves fossils dating back to the Jurassic period. Dinosaur remains are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus.
The Kootenay Group, originally called the Kootenay Formation, is a geologic unit of latest Jurassic to earliest Cretaceous age in the Western Canada Sedimentary Basin that is present in the southern and central Canadian Rockies and foothills. It includes economically important deposits of high-rank bituminous and semi-anthracite coal, as well as plant fossils and dinosaur trackways.
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