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168 relations: Abelisaur, Aeolian processes, Age (geology), Alberta, Albian, American Geophysical Union, Ammonoidea, Anapachydiscus, Anatidae, André Dumont, Anhydrite, Anseranatidae, Anseriformes, Arabian Gulf Oil Company, Ardour (river), Azhdarchidae, Ömnögovi Province, Barun Goyot Formation, Batoidea, BBC News Online, Bearpaw Formation, Belemnitida, Belgium, Berivotra Formation, Biozone, Bird, Cambridge University Press, Campanian, Carbon, Cenozoic, Chalk Group, Charadriiformes, Chicxulub impactor, Clay, Climate, Continental margin, Cretaceous, Cretaceous–Paleogene boundary, Cretaceous–Paleogene extinction event, Crocodilia, Cyrenaica, Danian, David B. Weishampel, Deposition (geology), Dinosaur, Dinosaur Park Formation, Discharge (hydrology), Djadochta Formation, Dromornithidae, Dune, ..., Edmonton Group, Epoch (geology), Era (geology), Erathem, Extinction, Extinction event, Fauna, Fish, Flowering plant, Fluvial, Foraminifera, Fossil, Fox Hills Formation, France, Galliformes, Gamma ray, Gastornithiformes, Genus, Geologic time scale, Geological formation, Geological period, Gobi Desert, Gujarat, Hell Creek Formation, Horseshoe Canyon Formation, Igneous rock, India, Indosaurus, Indosuchus, International Commission on Stratigraphy, International Union of Geological Sciences, Iridium, Isisaurus, Jordan, Montana, Judith River Formation, Laevisuchus, Lameta Formation, Lancian, Late Cretaceous, Libya, Maastricht, Maastricht Formation, Madagascar, Madhya Pradesh, Maevarano Formation, Mahajanga Province, Maharashtra, Majungasaurus, Marine reptile, Mesozoic, Metamorphic rock, Metasequoia, Metaves, Meuse, Mongolia, Montana, Mosasaur, Mosasaurus, Mudstone, National Oil Corporation, Navajodactylus, Nemegt Formation, Neognathae, Netherlands, Nomen dubium, North American land mammal age, North Dakota, Nyctosauridae, Ocean, Oil field, Osteichthyes, Pachydiscus, Palaeognathae, Paleocene, Paleogene, Penguin, Pierre Shale, Plankton, Plesiosauria, Pollen, Precambrian, Presbyornithidae, Pteranodontidae, Rahonavis, Rajasaurus, Rapetosaurus, River, Rocky Mountains, Sandstone, Sarir field, Saskatchewan, Saurolophus, Sauropoda, Screamer, Sea turtle, Sedimentary rock, Semi-arid climate, Series (stratigraphy), Shale, Shark, Shellfish, Source rock, South Dakota, Stage (stratigraphy), Stegosauria, Stratum, System (stratigraphy), Tercis-les-Bains, Tertiary, Theropoda, Titanosaur, Turtle, Two Medicine Formation, Vegavis, Vorona, Western Interior Seaway, Wyoming, Year. Expand index (118 more) »
Abelisaur
Abelisaurs (Abelisauria or Abelisauroidea) were a phylogenetic group within Neotheropoda.
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Aeolian processes
Aeolian processes, also spelled eolian or æolian, pertain to wind activity in the study of geology and weather and specifically to the wind's ability to shape the surface of the Earth (or other planets).
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Age (geology)
A geologic age is a subdivision of geologic time that divides an epoch into smaller parts.
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Alberta
Alberta is a western province of Canada.
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Albian
The Albian is both an age of the geologic timescale and a stage in the stratigraphic column.
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American Geophysical Union
The American Geophysical Union (AGU) is a 501(c)(3) nonprofit organization of geophysicists, consisting of over 62,000 members from 144 countries.
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Ammonoidea
Ammonoids are an extinct group of marine mollusc animals in the subclass Ammonoidea of the class Cephalopoda.
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Anapachydiscus
Anapachydiscus is an extinct cephalopod genus from the Upper Cretaceous, Santonian - Maastrichtian of Europe, Africa, Madagascar, S.India, N Z, Calif.
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Anatidae
The Anatidae are the biological family of birds that includes ducks, geese, and swans.
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André Dumont
André Hubert Dumont (15 February 180928 February 1857) was a Belgian geologist.
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Anhydrite
Anhydrite is a mineral—anhydrous calcium sulfate, CaSO4.
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Anseranatidae
Anseranatidae, the magpie-geese, is a biological family of waterbirds.
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Anseriformes
Anseriformes is an order of birds that comprise about 180 living species in three families: Anhimidae (the screamers), Anseranatidae (the magpie goose), and Anatidae, the largest family, which includes over 170 species of waterfowl, among them the ducks, geese, and swans.
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Arabian Gulf Oil Company
The Arabian Gulf Oil Company (Agoco; شركة الخليج العربي للنفط) is an oil company based in Benghazi, Libya, engaged in crude oil and natural gas exploration, production and refining.
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Ardour (river)
The Ardour is a 33.5 km long river flowing in the departments of the Creuse and Haute-Vienne, in the Limousin region of France.
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Azhdarchidae
Azhdarchidae (from Persian word azhdar (اژدر), a dragon-like creature in Persian mythology) is a family of pterosaurs known primarily from the late Cretaceous Period, though an isolated vertebra apparently from an azhdarchid is known from the early Cretaceous as well (late Berriasian age, about 140 million years ago).
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Ömnögovi Province
Ömnögovi (Өмнөговь Ömnögovǐ, South Gobi) is an aimag (province) of Mongolia, located in the south of the country, in the Gobi Desert.
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Barun Goyot Formation
The Barun Goyot Formation (West Goyot Formation) is a geological formation dating to the Late Cretaceous Period.
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Batoidea
Batoidea is a superorder of cartilaginous fish commonly known as rays.
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BBC News Online
BBC News Online is the website of BBC News, the division of the BBC responsible for newsgathering and production.
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Bearpaw Formation
The Bearpaw Formation, also called the Bearpaw Shale, is a geologic formation of Late Cretaceous (Campanian) age.
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Belemnitida
Belemnitida (or belemnites) is an extinct order of cephalopods which existed during the Mesozoic era, from the Hettangian age of the Lower Jurassic to the Maastrichtian age of the Upper Cretaceous.
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Belgium
Belgium, officially the Kingdom of Belgium, is a country in Western Europe bordered by France, the Netherlands, Germany and Luxembourg.
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Berivotra Formation
The Berivotra Formation is a Maastrichtian Upper Cretaceous Period sedimentary rock marine formation found on Madagascar, off the eastern coast of Africa.
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Biozone
Biostratigraphic unit or biozones are intervals of geological strata that are defined on the basis of their characteristic fossil taxa.
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Bird
Birds, also known as Aves, are a group of endothermic vertebrates, characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton.
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Cambridge University Press
Cambridge University Press (CUP) is the publishing business of the University of Cambridge.
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Campanian
The Campanian is, in the ICS' geologic timescale, the fifth of six ages of the Late Cretaceous epoch (or, in chronostratigraphy: the fifth of six stages in the Upper Cretaceous series).
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Carbon
Carbon (from carbo "coal") is a chemical element with symbol C and atomic number 6.
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Cenozoic
The Cenozoic Era meaning "new life", is the current and most recent of the three Phanerozoic geological eras, following the Mesozoic Era and, extending from 66 million years ago to the present day.
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Chalk Group
The Chalk Group (often just called the Chalk) is the lithostratigraphic unit (a certain number of rock strata) which contains the late Cretaceous limestone succession in southern and eastern England.
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Charadriiformes
Charadriiformes is a diverse order of small to medium-large birds.
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Chicxulub impactor
The Chicxulub impactor, also known as the K/Pg impactor and (more speculatively) as the Chicxulub asteroid, was an asteroid in diameter which struck the Earth at the end of the Cretaceous, approximately 66 million years ago, creating the Chicxulub crater.
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Clay
Clay is a finely-grained natural rock or soil material that combines one or more clay minerals with possible traces of quartz (SiO2), metal oxides (Al2O3, MgO etc.) and organic matter.
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Climate
Climate is the statistics of weather over long periods of time.
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Continental margin
The continental margin is one of the three major zones of the ocean floor, the other two being deep-ocean basins and mid-ocean ridges.
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Cretaceous
The Cretaceous is a geologic period and system that spans 79 million years from the end of the Jurassic Period million years ago (mya) to the beginning of the Paleogene Period mya.
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Cretaceous–Paleogene boundary
The Cretaceous–Paleogene (K–Pg) boundary, formerly known as the Cretaceous–Tertiary (K-T) boundary, is a geological signature, usually a thin band of rock.
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Cretaceous–Paleogene extinction event
The Cretaceous–Paleogene (K–Pg) extinction event, also known as the Cretaceous–Tertiary (K–T) extinction, was a sudden mass extinction of some three-quarters of the plant and animal species on Earth, approximately 66 million years ago.
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Crocodilia
Crocodilia (or Crocodylia) is an order of mostly large, predatory, semiaquatic archosaurian reptiles, known as crocodilians.
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Cyrenaica
Cyrenaica (Cyrenaica (Provincia), Κυρηναία (ἐπαρχία) Kyrēnaíā (eparkhíā), after the city of Cyrene; برقة) is the eastern coastal region of Libya.
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Danian
The Danian is the oldest age or lowest stage of the Paleocene epoch or series, the Paleogene period or system and the Cenozoic era or erathem.
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David B. Weishampel
Professor David Bruce Weishampel (born November 16, 1952) is an American palaeontologist in the Center for Functional Anatomy and Evolution at Johns Hopkins University School of Medicine.
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Deposition (geology)
Deposition is the geological process in which sediments, soil and rocks are added to a landform or land mass.
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Dinosaur
Dinosaurs are a diverse group of reptiles of the clade Dinosauria.
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Dinosaur Park Formation
The Dinosaur Park Formation is the uppermost member of the Belly River Group (also known as the Judith River Group), a major geologic unit in southern Alberta.
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Discharge (hydrology)
In hydrology, discharge is the volumetric flow rate of water that is transported through a given cross-sectional area.
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Djadochta Formation
The Djadochta Formation (sometimes transcribed Djadokhta) is a geological formation situated in central Asia (Gobi Desert), dating from the Late Cretaceous Period.
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Dromornithidae
Dromornithidae (the dromornithids), also commonly referred to as thunder birds or demon ducks, were a clade of large, flightless Australian birds of the Oligocene through Pleistocene epochs.
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Dune
In physical geography, a dune is a hill of loose sand built by aeolian processes (wind) or the flow of water.
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Edmonton Group
The Edmonton Group is a Late Cretaceous (Campanian stage) to early Paleocene stratigraphic unit of the Western Canada Sedimentary Basin in the central Alberta plains.
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Epoch (geology)
In geochronology, an epoch is a subdivision of the geologic timescale that is longer than an age but shorter than a period.
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Era (geology)
A geologic era is a subdivision of geologic time that divides an eon into smaller units of time.
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Erathem
In stratigraphy, paleontology, geology, and geobiology an erathem is the total stratigraphic unit deposited during a certain corresponding span of time during an era in the geologic timescale.
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Extinction
In biology, extinction is the termination of an organism or of a group of organisms (taxon), normally a species.
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Extinction event
An extinction event (also known as a mass extinction or biotic crisis) is a widespread and rapid decrease in the biodiversity on Earth.
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Fauna
Fauna is all of the animal life of any particular region or time.
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Fish
Fish are gill-bearing aquatic craniate animals that lack limbs with digits.
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Flowering plant
The flowering plants, also known as angiosperms, Angiospermae or Magnoliophyta, are the most diverse group of land plants, with 416 families, approximately 13,164 known genera and c. 295,383 known species.
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Fluvial
In geography and geology, fluvial processes are associated with rivers and streams and the deposits and landforms created by them.
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Foraminifera
Foraminifera (Latin for "hole bearers"; informally called "forams") are members of a phylum or class of amoeboid protists characterized by streaming granular ectoplasm for catching food and other uses; and commonly an external shell (called a "test") of diverse forms and materials.
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Fossil
A fossil (from Classical Latin fossilis; literally, "obtained by digging") is any preserved remains, impression, or trace of any once-living thing from a past geological age.
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Fox Hills Formation
The Fox Hills Formation is a Cretaceous geologic formation in the northwestern Great Plains of North America.
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France
France, officially the French Republic (République française), is a sovereign state whose territory consists of metropolitan France in Western Europe, as well as several overseas regions and territories.
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Galliformes
Galliformes is an order of heavy-bodied ground-feeding birds that includes turkey, grouse, chicken, New World quail and Old World quail, ptarmigan, partridge, pheasant, junglefowl and the Cracidae.
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Gamma ray
A gamma ray or gamma radiation (symbol γ or \gamma), is penetrating electromagnetic radiation arising from the radioactive decay of atomic nuclei.
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Gastornithiformes
Gastornithiformes were an extinct order of giant flightless fowl with fossils found in North America, Eurasia, and possibly Australia.
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Genus
A genus (genera) is a taxonomic rank used in the biological classification of living and fossil organisms, as well as viruses, in biology.
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Geologic time scale
The geologic time scale (GTS) is a system of chronological dating that relates geological strata (stratigraphy) to time.
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Geological formation
A formation or geological formation is the fundamental unit of lithostratigraphy.
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Geological period
A geological period is one of several subdivisions of geologic time enabling cross-referencing of rocks and geologic events from place to place.
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Gobi Desert
The Gobi Desert is a large desert region in Asia.
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Gujarat
Gujarat is a state in Western India and Northwest India with an area of, a coastline of – most of which lies on the Kathiawar peninsula – and a population in excess of 60 million.
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Hell Creek Formation
The Hell Creek Formation is an intensively-studied division of mostly Upper Cretaceous and some lower Paleocene rocks in North America, named for exposures studied along Hell Creek, near Jordan, Montana.
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Horseshoe Canyon Formation
The Horseshoe Canyon Formation is a stratigraphic unit of the Western Canada Sedimentary Basin in southwestern Alberta.
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Igneous rock
Igneous rock (derived from the Latin word ignis meaning fire), or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic.
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India
India (IAST), also called the Republic of India (IAST), is a country in South Asia.
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Indosaurus
Indosaurus (meaning "Indian lizard") is a genus of theropod dinosaur once living in what is now India.
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Indosuchus
Indosuchus is a genus of abelisaurid dinosaur from the Late Cretaceous Period (70 to 66 million years ago – the Maastrichtian), a theropod related to Abelisaurus.
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International Commission on Stratigraphy
The International Commission on Stratigraphy (ICS), sometimes referred to by the unofficial name "International Stratigraphic Commission" is a daughter or major subcommittee grade scientific daughter organization that concerns itself with stratigraphy, geological, and geochronological matters on a global scale.
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International Union of Geological Sciences
The International Union of Geological Sciences (IUGS) is an international non-governmental organization devoted to international cooperation in the field of geology.
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Iridium
Iridium is a chemical element with symbol Ir and atomic number 77.
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Isisaurus
Isisaurus (named after the Indian Statistical Institute) is a genus of dinosaur from the Late Cretaceous Period.
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Jordan, Montana
Jordan is a town in and the county seat of Garfield County, Montana, United States.
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Judith River Formation
The Judith River Formation is a fossil-bearing geologic formation in Montana, and is part of the Judith River Group.
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Laevisuchus
Laevisuchus ("light crocodile") is a genus of abelisauroid theropod dinosaur from the Late Cretaceous.
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Lameta Formation
The Lameta Formation is a sedimentary rock formation found in Madhya Pradesh, Gujarat, and Maharashtra, India.
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Lancian
The Lancian was a North American faunal stage of the Late Cretaceous.
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Late Cretaceous
The Late Cretaceous (100.5–66 Ma) is the younger of two epochs into which the Cretaceous period is divided in the geologic timescale.
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Libya
Libya (ليبيا), officially the State of Libya (دولة ليبيا), is a sovereign state in the Maghreb region of North Africa, bordered by the Mediterranean Sea to the north, Egypt to the east, Sudan to the southeast, Chad and Niger to the south and Algeria and Tunisia to the west.
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Maastricht
Maastricht (Limburgish: Mestreech; French: Maestricht; Spanish: Mastrique) is a city and a municipality in the southeast of the Netherlands.
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Maastricht Formation
The Maastricht Formation (Dutch: Formatie van Maastricht; abbreviation: MMa), named after the city of Maastricht, the Netherlands, is a geological formation in the Netherlands and Belgium whose strata date back to the Late Cretaceous, within 500,000 years of the Cretaceous–Paleogene boundary, now dated at.
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Madagascar
Madagascar (Madagasikara), officially the Republic of Madagascar (Repoblikan'i Madagasikara; République de Madagascar), and previously known as the Malagasy Republic, is an island country in the Indian Ocean, off the coast of East Africa.
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Madhya Pradesh
Madhya Pradesh (MP;; meaning Central Province) is a state in central India.
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Maevarano Formation
The Maevarano Formation is an Upper Cretaceous sedimentary rock formation found in the Mahajanga Province of northwestern Madagascar.
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Mahajanga Province
Mahajanga is a former province of Madagascar with an area of 150,023 km².
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Maharashtra
Maharashtra (abbr. MH) is a state in the western region of India and is India's second-most populous state and third-largest state by area.
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Majungasaurus
Majungasaurus ("Mahajanga lizard") is a genus of abelisaurid theropod dinosaur that lived in Madagascar from 70 to 66 million years ago, at the end of the Cretaceous Period.
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Marine reptile
Reptiles that live in the sea. Marine reptiles are reptiles which have become secondarily adapted for an aquatic or semiaquatic life in a marine environment.
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Mesozoic
The Mesozoic Era is an interval of geological time from about.
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Metamorphic rock
Metamorphic rocks arise from the transformation of existing rock types, in a process called metamorphism, which means "change in form".
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Metasequoia
Metasequoia (dawn redwood) is a fast-growing, deciduous tree, and the sole living species, Metasequoia glyptostroboides, is one of three species of conifers known as redwoods.
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Metaves
Metaves ("higher birds") is a controversial clade proposed by Fain & Houde (2004) and later rescued on the studies of Ericson et al. (2006)Ericson, P.G.P. et al. (2006).
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Meuse
The Meuse (la Meuse; Walloon: Moûze) or Maas (Maas; Maos or Maas) is a major European river, rising in France and flowing through Belgium and the Netherlands before draining into the North Sea.
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Mongolia
Mongolia (Monggol Ulus in Mongolian; in Mongolian Cyrillic) is a landlocked unitary sovereign state in East Asia.
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Montana
Montana is a state in the Northwestern United States.
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Mosasaur
Mosasaurs (from Latin Mosa meaning the 'Meuse river', and Greek σαύρος sauros meaning 'lizard') are an extinct group of large marine reptiles containing 38 genera in total.
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Mosasaurus
Mosasaurus ("lizard of the Meuse River") is a genus of mosasaurs, extinct carnivorous aquatic lizards.
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Mudstone
Mudstone, a type of mudrock, is a fine-grained sedimentary rock whose original constituents were clays or muds.
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National Oil Corporation
The National Oil Corporation (NOC; المؤسسة الوطنية للنفط) is the national oil company of Libya.
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Navajodactylus
Navajodactylus (meaning "Navajo finger") is an extinct genus of pterosaur from Late Cretaceous (late Campanian stage) deposits of San Juan Basin, New Mexico and Alberta, Canada.
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Nemegt Formation
The Nemegt Formation (or Nemegtskaya Svita) is a geological formation in the Gobi Desert of Mongolia, dating to the Late Cretaceous.
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Neognathae
Neognaths (Neognathae) are birds within the subclass Neornithes of the class Aves.
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Netherlands
The Netherlands (Nederland), often referred to as Holland, is a country located mostly in Western Europe with a population of seventeen million.
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Nomen dubium
In zoological nomenclature, a nomen dubium (Latin for "doubtful name", plural nomina dubia) is a scientific name that is of unknown or doubtful application.
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North American land mammal age
The North American land mammal ages (NALMA) establishes a geologic timescale for North American fauna beginning during the Late Cretaceous and continuing through to the present.
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North Dakota
North Dakota is a U.S. state in the midwestern and northern regions of the United States.
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Nyctosauridae
Nyctosauridae (meaning "night lizards" or "bat lizards") is a family of specialized soaring pterosaurs of the late Cretaceous Period of North America and, possibly, Europe.
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Ocean
An ocean (the sea of classical antiquity) is a body of saline water that composes much of a planet's hydrosphere.
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Oil field
An "oil field" or "oilfield" is a region with an abundance of oil wells extracting petroleum (crude oil) from below ground.
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Osteichthyes
Osteichthyes, popularly referred to as the bony fish, is a diverse taxonomic group of fish that have skeletons primarily composed of bone tissue, as opposed to cartilage.
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Pachydiscus
Pachydiscus is an extinct genus of ammonite from the Late Cretaceous with a worldwide distribution, and type for the desmoceratacean family Pachydiscidae.
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Palaeognathae
Palaeognathae, or paleognaths, is one of the two living clades of birds – the other being Neognathae.
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Paleocene
The Paleocene or Palaeocene, the "old recent", is a geological epoch that lasted from about.
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Paleogene
The Paleogene (also spelled Palaeogene or Palæogene; informally Lower Tertiary or Early Tertiary) is a geologic period and system that spans 43 million years from the end of the Cretaceous Period million years ago (Mya) to the beginning of the Neogene Period Mya.
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Penguin
Penguins (order Sphenisciformes, family Spheniscidae) are a group of aquatic, flightless birds.
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Pierre Shale
The Pierre Shale is a geologic formation or series in the Upper Cretaceous which occurs east of the Rocky Mountains in the Great Plains, from Pembina Valley in Canada to New Mexico.
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Plankton
Plankton (singular plankter) are the diverse collection of organisms that live in large bodies of water and are unable to swim against a current.
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Plesiosauria
Plesiosauria (Greek: πλησίος, plesios, meaning "near to" and Sauria) or plesiosaurs are an order or clade of Mesozoic marine reptiles (marine Sauropsida), belonging to the Sauropterygia.
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Pollen
Pollen is a fine to coarse powdery substance comprising pollen grains which are male microgametophytes of seed plants, which produce male gametes (sperm cells).
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Precambrian
The Precambrian (or Pre-Cambrian, sometimes abbreviated pЄ, or Cryptozoic) is the earliest part of Earth's history, set before the current Phanerozoic Eon.
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Presbyornithidae
Presbyornithidae is an extinct group of birds with a global distribution.
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Pteranodontidae
The Pteranodontidae are a family of large pterosaurs of the Cretaceous Period of North America.
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Rahonavis
Rahonavis is a genus of bird-like theropods from the Late Cretaceous (Maastrichtian, about 70 mya) of what is now northwestern Madagascar.
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Rajasaurus
Rajasaurus ('Raja' meaning "king" (derived from Sanskrit) here,"king of lizards") is a genus of carnivorous abelisaurian theropod dinosaur with an unusual head crest.
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Rapetosaurus
Rapetosaurus is a genus of sauropod dinosaur that lived in Madagascar from 70 to 66 million years ago, at the end of the Cretaceous Period.
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River
A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river.
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Rocky Mountains
The Rocky Mountains, also known as the Rockies, are a major mountain range in western North America.
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Sandstone
Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) mineral particles or rock fragments.
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Sarir field
The Sarir Field was discovered in southern Cyrenaica during 1961 and is considered to be the largest oil field in Libya, with estimated oil reserves of.
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Saskatchewan
Saskatchewan is a prairie and boreal province in western Canada, the only province without natural borders.
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Saurolophus
Saurolophus (meaning "lizard crest") is a genus of large saurolophine hadrosaurid dinosaurs that lived about 70.0–68.5 million years ago, in the Late Cretaceous of North America and Asia; it is one of the few genera of dinosaurs known from multiple continents.
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Sauropoda
Sauropoda, or the sauropods (sauro- + -pod, "lizard-footed"), are a clade of saurischian ("lizard-hipped") dinosaurs.
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Screamer
The screamers are a small family, Anhimidae, of South American birds.
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Sea turtle
Sea turtles (superfamily Chelonioidea), sometimes called marine turtles, are reptiles of the order Testudines.
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Sedimentary rock
Sedimentary rocks are types of rock that are formed by the deposition and subsequent cementation of that material at the Earth's surface and within bodies of water.
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Semi-arid climate
A semi-arid climate or steppe climate is the climate of a region that receives precipitation below potential evapotranspiration, but not as low as a desert climate.
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Series (stratigraphy)
Series are subdivisions of rock layers based on the age of the rock and formally defined by international conventions of the geological timescale.
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Shale
Shale is a fine-grained, clastic sedimentary rock composed of mud that is a mix of flakes of clay minerals and tiny fragments (silt-sized particles) of other minerals, especially quartz and calcite.
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Shark
Sharks are a group of elasmobranch fish characterized by a cartilaginous skeleton, five to seven gill slits on the sides of the head, and pectoral fins that are not fused to the head.
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Shellfish
Shellfish is a food source and fisheries term for exoskeleton-bearing aquatic invertebrates used as food, including various species of molluscs, crustaceans, and echinoderms.
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Source rock
In petroleum geology, source rock refers to rocks from which hydrocarbons have been generated or are capable of being generated.
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South Dakota
South Dakota is a U.S. state in the Midwestern region of the United States.
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Stage (stratigraphy)
In chronostratigraphy, a stage is a succession of rock strata laid down in a single age on the geologic timescale, which usually represents millions of years of deposition.
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Stegosauria
Stegosauria is a group of herbivorous ornithischian dinosaurs that lived during the Jurassic and early Cretaceous periods.
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Stratum
In geology and related fields, a stratum (plural: strata) is a layer of sedimentary rock or soil, or igneous rock that were formed at the Earth's surface, with internally consistent characteristics that distinguish it from other layers.
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System (stratigraphy)
A system in stratigraphy is a unit of rock layers that were laid down together within the same corresponding geological period.
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Tercis-les-Bains
Tercis-les-Bains is a commune in the Landes department in Nouvelle-Aquitaine in southwestern France.
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Tertiary
Tertiary is the former term for the geologic period from 65 million to 2.58 million years ago, a timespan that occurs between the superseded Secondary period and the Quaternary.
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Theropoda
Theropoda (or, from Greek θηρίον "wild beast" and πούς, ποδός "foot") or theropods are a dinosaur suborder characterized by hollow bones and three-toed limbs.
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Titanosaur
Titanosaurs (members of the group Titanosauria) were a diverse group of sauropod dinosaurs which included Saltasaurus and Isisaurus.
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Turtle
Turtles are diapsids of the order Testudines (or Chelonii) characterized by a special bony or cartilaginous shell developed from their ribs and acting as a shield.
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Two Medicine Formation
The Two Medicine Formation is a geologic formation, or rock body, that was deposited between 83.5 ± 0.7 Ma and 70.6 ± 3.4 Ma (million years ago), during Campanian (Late Cretaceous) time, and is located in northwestern Montana and southern Alberta.
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Vegavis
Vegavis is a genus of extinct bird that lived during the Late Cretaceous (Maastrichtian stage) of Antarctica, some 68 to 66 mya.
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Vorona
Vorona (Malagasy for "bird", V. berivotrensis, "from Berivotra") is a monotypic genus of prehistoric birds.
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Western Interior Seaway
The Western Interior Seaway (also called the Cretaceous Seaway, the Niobraran Sea, the North American Inland Sea, and the Western Interior Sea) was a large inland sea that existed during the mid- to late Cretaceous period as well as the very early Paleogene, splitting the continent of North America into two landmasses, Laramidia to the west and Appalachia to the east.
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Wyoming
Wyoming is a state in the mountain region of the western United States.
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Year
A year is the orbital period of the Earth moving in its orbit around the Sun.
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Redirects here:
Early Maastrichtian, Maastrichtian (geological period), Maastrichtian Stage, Maastrichtian age, Maestrichtian.
References
[1] https://en.wikipedia.org/wiki/Maastrichtian
