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Ankarafantsika Formation

The Ankarafantsika Formation is a Late Cretaceous geologic formation of the Mahajanga Basin in the Boeny region of Madagascar, Africa. The fine-grained sandstones of the formation were deposited in a fluvial to lacustrine environment.

Ankazomihaboka Formation

The Ankazomihaboka Formation is a Coniacian geologic formation in the Mahajanga Basin of northwestern Madagascar. The formation comprises claystones and sandstones deposited in a fluvial to lacustrine environment. The formation is overlain by the ...

Antenor Navarro Formation

Among others the following fossils have been found in the formation: Staurichnium diogenis Carnosauria indet. Sauropoda indet. Caririchnium magnificum Nodosauridae indet.

Areado Group

The group contains the following formations from young to old: Abaete Formation - fluvial conglomerates Quirico Formation - lacustrine claystones Três Barras Formation - eolian and fluvio-deltaic sandstones

Bahariya Formation

The Bahariya Formation is a fossiliferous geologic formation dating back to the early Cenomanian, which outcrops within the Bahariya depression in Egypt, and is known from oil exploration drilling across much of the Western Desert where it forms ...

Bahe Formation

The Bahe Formation is a Late Miocene geological formation in Shaanxi, China. It has "a complex lithology of predominantly orange-yellow conglomerates, sandstones, tan-yellow sandy mudstones, and tan-red mudstones." The main fossil locality is in ...

Bajada Colorada Formation

The Bajada Colorada Formation is a geologic formation of the southern Neuquen Province in the Neuquen Basin of northern Patagonia, Argentina. The formation belongs to the Mendoza Group and is Late Berriasian to Early Valanginian in age. The forma ...

Bajo Barreal Formation

The Bajo Barreal Formation is a geological formation in the Golfo San Jorge Basin of Chubut and Santa Cruz, Argentina whose strata date back to the Middle Cenomanian to Late Turonian. The formation was first described by Teruggi & Rossetto in 196 ...

Bajo de la Carpa Formation

The Bajo de la Carpa Formation is a geologic formation of the Neuquen Basin that crops out in northern Patagonia, in the provinces of Rio Negro and Neuquen, Argentina. It is the oldest of two formations belonging to the Rio Colorado Subgroup with ...

Baños del Flaco Formation

The Baños del Flaco Formation is a Late Jurassic to Early Cretaceous (Tithonian to Berriasian geologic formation in central Chile. The formation comprises limestones and sandstones deposited in a shallow marine to fluvial environment. Fossil orni ...

Barzalosa Formation

The Barzalosa Formation is a fossiliferous geological formation of the Upper Magdalena Valley and the bounding foothills of the Central Ranges and Eastern Ranges of the Colombian Andes. The formation consists of conglomerates, sandstones and silt ...

Cajones Formation

The Cajones Formation is a Turonian geologic formation of central Bolivia. The fluvial sandstones in Amboro National Park preserve fossils of Yacarerani boliviensis. The formation is correlated with the Adamantina Formation of the Parana Basin in ...

Camarillas Formation

The Camarillas Formation is a geological formation in the Teruel Province of Aragon, Spain whose strata date back to the Early Cretaceous. The sandstones, mudstones and conglomerates of the formation, that due to syn-sedimentary faulting varies g ...

Cañadon Asfalto Formation

The Cañadon Asfalto Formation is a Middle Jurassic to Late Jurassic geologic formation, from the Jurassic period of the Mesozoic Era. Its age is controversial, uranium-lead dating of the volcanic tuff beds having given various different ages. Rec ...

Cañadon Calcareo Formation

The Cañadon Calcareo Formation is an Oxfordian to Kimmeridgian-aged geologic formation, from the Cañadon Asfalto Basin in Chubut Province, Argentina, a rift basin that started forming since the earliest Jurassic. It was formerly thought to date i ...

Candeleros Formation

The Candeleros Formation is a geologic formation that crops out in the Rio Negro, Neuquen, and Mendoza provinces of northern Patagonia, Argentina. It is the oldest formation in the Neuquen Group and belongs to the Rio Limay Subgroup. Formerly tha ...

Castilletes Formation

The Castilletes Formation is a fossiliferous geological formation of the Cocinetas Basin in the northernmost department of La Guajira, Colombia. The formation consists of fossiliferous mudstones, siltstones and medium-grained to conglomeratic fos ...

Castillo Formation, Venezuela

The Castillo Formation is an Early Miocene geologic formation in the Falcon Basin of Venezuela. The formation unconformably overlies the Matatere, Misoa, El Pauji and Jarillal Formations. The Castillo Formation is overlain by Quaternary alluvium ...

Cazaderos Formation

The Cazaderos Formation is an Albian geologic formation in southern Ecuador. Fossil theropod tracks of 9 centimetres in size, have been reported from the formation at the Puyango River tracksite.

Cedar Mountain Formation

The Cedar Mountain Formation is the name given to a distinctive sedimentary geologic formation in eastern Utah. The formation was named for Cedar Mountain in northern Emery County, Utah, where William Lee Stokes first studied the exposures in 1944.

Cerro Barcino Formation

The Cerro Barcino Formation is a geological formation in South America whose strata span the Early Cretaceous. The top age for the formation has been estimated to be Albian. Earlier estimates placed the formation until the Campanian. The formatio ...

Cerro Carnerero Formation

The formation comprises sandy tuffs and bluish gray claystones, which form part of a continental sedimentary series mixed with porphyritic conglomerates with partly encrusted round pebbles, and bluish gray clays with sandy intercalations and clay ...

Cerro Fortaleza Formation

The Cerro Fortaleza Formation, in older literature described as Pari Aike Formation, is a Late Cretaceous geologic formation of Cenomanian age of the Austral Basin in southern Patagonia, Argentina.

Chacarilla Formation

The Chacarilla Formation is an Oxfordian to Early Cretaceous geologic formation of the Tarapaca Basin in northern Chile, close to the border with Bolivia. The marine and fluvial formation preserves several dinosaur trackways and has been declared ...

Chañares Formation

The Chañares Formation is a geologic formation of the Ischigualasto-Villa Union Basin, located in La Rioja Provence, Argentina. The claystones and tuffs of the formation date to the Carnian stage of the Late Triassic and were deposited in a fluvi ...

Chenini Member

The Chenini Member is a geological member of the Aïn el Guettar Formation in Tunisia, whose strata date back to the Late Aptian to Early Albian stages of the Cretaceous period. The lithology consists of coarse sandstones with occasional conglomer ...

Colorado Formation, Argentina

The Colorado Formation is a Late Cretaceous (Campanian to Maastrichtian geologic formation that is exposed within the Colorado Basin in the southeastern part of La Pampa Province, Argentina. Fossil dinosaur eggs have been reported from the nonmar ...

Corda Formation

The Corda Formation is a red sandstone geologic formation in the Parnaiba Basin in Tocantins, Brazil. It was formed during the Neoaptian to Eoalbian series of the Early Cretaceous. Large-scale fossil sauropod tracks have been reported from the fo ...

Dariv Formation

The Dariv Formation is a Late Jurassic geologic formation in Govi-Altay, Mongolia. Dinosaur remains diagnostic to the genus level are among the fossils that have been recovered from the mudstones and sandstones of the formation.

Dinosaur Park Formation

The Dinosaur Park Formation is the uppermost member of the Belly River Group, a major geologic unit in southern Alberta. It was laid down during the Campanian stage of the Late Cretaceous epoch between 76.9 and 75.8 million years ago. It was depo ...

Donguz Formation

The Donguz Formation or Donguz Rocks is stratigraphic formation that crops out on the right bank of Donguz River in Orenburg Oblast, Russia, across the settlement of Pervomaisky. It is famous for its rich collection of the fossils of Middle Trias ...

Echkar Formation

Its strata date back to the Late Albian to Late Cretaceous Cenomanian stages, about 100-95 million years ago. Dinosaur remains are among the fossils that have been recovered from the formation.

El Jume Formation

The El Jume Formation is an Early Cretaceous geologic formation in Argentina. Indeterminate fossil dinosaur tracks have been reported from the formation. The formation, belonging to the El Gigante Group, overlies the Los Riscos Formation and is o ...

El Mamey Formation

The El Mamey Formation is a geologic formation in the Dominican Republic. The formation consists of shales and sandstones interspersed with a conglomerate of well-rounded pebbles, deposited in a fluvio-deltaic environment. El Mamey Formation is o ...

Elisabeth Bay Formation

The Elisabeth Bay Formation, alternatively spelled as Elizabeth Bay Formation, is an Early Miocene geologic formation in the Sperrgebiet, ǁKaras Region of southwestern Namibia, overlying the Blaubok Conglomerate. The freshwater green and red silt ...

Elrhaz Formation

The Elrhaz Formation is a geological formation in Niger, central Africa. Its strata date back to the Early Cretaceous late Aptian to early Albian stages, about 112 million years ago. Dinosaur remains are among the fossils that have been recovered ...

Enciso Group

The Enciso Group is a geological formation in La Rioja, Spain whose strata date back to the Early Cretaceous. The turtle Camerochelys was described from the Enciso Group. Dinosaur remains are among the fossils that have been recovered from the fo ...

Escarpment Grit

The formation is composed of fluvial sediments, mainly gritstones and coarse sandstones. Uranium is present in the Escarpment Grit of southern Zambia.

Eumeralla Formation

The Eumeralla Formation is a geological formation in Victoria, Australia whose strata date back to the Early Cretaceous. It is Aptian to Albian in age. Dinosaur remains are among the fossils that have been recovered from the formation, particular ...

Forest Sandstone

The Forest Sandstone is a geological formation in southern Africa, dating to roughly between 200 and 190 million years ago and covering the Hettangian to Sinemurian stages of the Jurassic Period in the Mesozoic Era. As its name suggests, it consi ...

Fountain Formation

The Fountain Formation is a Pennsylvanian bedrock unit consisting primarily of conglomerate, sandstone, or arkose, in the states of Colorado and Wyoming in the United States, along the east side of the Front Range of the Rocky Mountains, and alon ...

Fram Formation

The Fram Formation is an Upper Devonian sequence of rock strata on Ellesmere Island that came into prominence in 2006 with the discovery in its rocks of examples of the transitional fossil, Tiktaalik, a sarcopterygian or lobe-finned fish showing ...

Fremouw Formation

The Fremouw Formation is a Triassic-age rock formation in the Transantarctic Mountains of Antarctica. Fossils of prehistoric reptiles and amphibians have been found in the formation. Fossilized trees have also been found. The formations beds were ...

Gai-As Formation

The Gai-As Formation is an Early to Middle Permian geologic formation correlated with the Ecca Group and designated "Ecca" Group, because it does not belong to the Karoo, in the southwestern Kunene Region and northern Erongo Region of northwester ...

Griman Creek Formation

The Griman Creek Formation is a geological formation in northern New South Wales and southern Queensland, Australia whose strata date back to the Cenomanian of the Late Cretaceous. It is most notable for its fossils, including those of dinosaurs ...

Guabirotuba Formation

The Guabirotuba Formation is a late Middle Eocene geologic formation of the Curitiba Basin in Parana, Brazil. The formation crops out in and around the city of Curitiba and comprises mudstones and sandstones deposited in a fluvial floodplain envi ...

Hanson Formation

The Hanson Formation is a geologic formation on Mount Kirkpatrick, Antarctica. It is one of only two major dinosaur-bearing rock groups found on the continent of Antarctica to date; the other is the Snow Hill Island Formation and related formatio ...

Honda Group, Colombia

The Honda Group is a geological group of the Upper and Middle Magdalena Basins and the adjacent Central and Eastern Ranges of the Colombian Andes. The group, in older literature also defined as formation, is in its present-day type section in the ...

Huincul Formation

The Huincul Formation is a geologic formation of Late Cretaceous age of the Neuquen Basin that outcrops in the Mendoza, Rio Negro and Neuquen Provinces of northern Patagonia, Argentina. It is the second formation in the Rio Limay Subgroup, the ol ...

In Beceten Formation

The In Beceten Formation, also Beceten or Ibecten is a Coniacian to Santonian geologic formation in the Iullemmeden Basin of Niger. Dinosaur remains are among the fossils that have been recovered from the formation, although none have yet been re ...