Title: List of North American dinosaurs Content: This is a list of dinosaurs whose remains have been recovered from North America. North America has a rich dinosaur fossil record with great diversity of dinosaurs. This may not mean the dinosaurs were more diverse or abundant; it may be because substantial resources have been devoted to the North American fossil record. The Middle Jurassic is the only poorly represented time period in North America, although several Middle Jurassic localities are known from Mexico. Footprints, eggshells, teeth, and fragments of bone representing theropods, sauropods, and ornithopods have been found, but none of them are diagnostic to the genus level. The Upper Jurassic of North America, however, is the exact opposite of the Middle Jurassic. The Upper Jurassic Morrison Formation is found in several U.S. states, including Colorado, Utah, Wyoming, Montana, New Mexico, Oklahoma, South Dakota, and Texas. It is notable as being the most fertile single source of dinosaur fossils in the world. During the Lower Cretaceous, new dinosaurs appeared. Sauropods were still present, but they were not as diverse as they were in the Jurassic. Theropods from the early Cretaceous of North America include dromaeosaurs such as Deinonychus and Utahraptor, Acrocanthosaurus, and Microvenator. Sauropods included Astrodon, Pleurocoelus, and Sauroposeidon. Ornithischians were more diverse than they were in the Jurassic Period. Tenontosaurus, Hypsilophodon, Iguanodon, Protohadros, and Eolambia are some of the ornithopods that lived then. Ankylosaurs replaced their stegosaur cousins in the Cretaceous. Ankylosaurs from the early Cretaceous of North America include Sauropelta and Gastonia. Therizinosaurs such as Falcarius are also known from the early Cretaceous of North America. Finally, in the long Upper Cretaceous, the greatest abundance and diversity of dinosaurs of all time lived in North America. During the early part of the Upper Cretaceous, the therizinosaur Nothronychus and the ceratopsian Zuniceratops lived. During the Campanian stage (83.672 mya), an enormous diversity of dinosaurs is known. Theropods included the tyrannosaurs Albertosaurus, Gorgosaurus, Daspletosaurus, Appalachiosaurus, and Dryptosaurus, and the dromaeosaurids Dromaeosaurus, Saurornitholestes, Atrociraptor, and Bambiraptor. Ceratopsians, such as Pachyrhinosaurus, Styracosaurus, Centrosaurus Monoclonius, Brachyceratops, Pentaceratops, and Leptoceratops also existed. Among hadrosaurs, Parasaurolophus, Corythosaurus, Lambeosaurus, Saurolophus, and Prosaurolophus existed. During the latest Cretaceous, the Maastrichtian stage (7265.5 mya), the diversity of dinosaurs wasn't as great as the preceding Campanian stage. North American herbivorous dinosaurs then included the titanosaur sauropod Alamosaurus, the ceratopsians Triceratops and Torosaurus, the pachycephalosaurs Pachycephalosaurus, Stygimoloch, Dracorex, and Stegoceras, the hadrosaurs Edmontosaurus and Anatotitan. Predatory dinosaurs from this time period included Tyrannosaurus and Nanotyrannus (which may just be a juvenile of the former), and the troodontid Troodon. : ==Timeline== This is a timeline of selected dinosaurs from the list above. Time is measured in Ma, megaannum, along the x-axis. ImageSize = width:800px height:auto barincrement:15px PlotArea = left:10px bottom:50px top:10px right:10px Period = from:-250 till:-25 TimeAxis = orientation:horizontal ScaleMajor = unit:year increment:25 start:-250 ScaleMinor = unit:year increment:5 start:-250 TimeAxis = orientation:hor AlignBars = justify Colors = #legends id:CAR value:claret id:HER value:teal id:OMN value:blue id:black value:black id:white value:white id:cretaceous value:rgb(0.3,0.75,0.1) id:jurassic value:rgb(0.3,0.75,0.4) id:triassic value:rgb(0.3,0.75,0.7) id:mesozoic value:rgb(0.3,0.6,0.4) BarData= bar:eratop bar:space bar:periodtop bar:space bar:NAM1 bar:NAM2 bar:NAM3 bar:NAM4 bar:NAM5 bar:NAM6 bar:NAM7 bar:NAM8 bar:NAM9 bar:NAM10 bar:NAM11 bar:NAM12 bar:NAM13 bar:NAM14 bar:NAM15 bar:NAM16 bar:NAM17 bar:NAM18 bar:NAM19 bar:NAM20 bar:NAM21 bar:NAM22 bar:NAM23 bar:NAM24 bar:NAM25 bar:NAM26 bar:NAM27 bar:NAM28 bar:NAM29 bar:NAM30 bar:NAM31 bar:NAM32 bar:NAM33 bar:NAM34 bar:NAM35 bar:NAM36 bar:NAM37 bar:NAM38 bar:NAM39 bar:NAM40 bar:NAM41 bar:NAM42 bar:NAM43 bar:NAM44 bar:NAM45 bar:NAM46 bar:NAM47 bar:NAM48 bar:NAM49 bar:NAM50 bar:NAM51 bar:NAM52 bar:NAM53 bar:NAM54 bar:NAM55 bar:NAM56 bar:NAM57 bar:NAM58 bar:NAM59 bar:space bar:period bar:space bar:era PlotData= align:center textcolor:black fontsize:M mark:(line,black) width:25 shift:(7,-4) bar:periodtop from: -145 till: -65 color:cretaceous text:Cretaceous from: -200 till: -145 color:jurassic text:Jurassic from: -250 till: -200 color:triassic text:Triassic bar:eratop from: -250 till: -65 color:mesozoic text:Mesozoic PlotData= align:left fontsize:M mark:(line,white) width:5 anchor:till align:left color:CAR bar:NAM1 from:-125 till:-100 text:Acrocanthosaurus color:HER bar:NAM2 from:-70 till:-65 text:Alamosaurus color:CAR bar:NAM3 from:-74 till:-69 text:Albertosaurus color:CAR bar:NAM4 from:-155 till:-145 text:Allosaurus color:HER bar:NAM5 from:-68 till:-65 text:Anatotitan color:HER bar:NAM6 from:-78 till:-70 text:Anchiceratops color:HER bar:NAM7 from:-70 till:-65 text:Ankylosaurus color:HER bar:NAM8 from:-155 till:-145 text:Apatosaurus color:HER bar:NAM9 from:-155 till:-145 text:Barosaurus color:HER bar:NAM10 from:-150 till:-145 text:Brachiosaurus color:HER bar:NAM11 from:-76 till:-72 text:Brachyceratops color:HER bar:NAM12 from:-77 till:-73 text:Brachylophosaurus color:HER bar:NAM13 from:-155 till:-145 text:Camarasaurus color:HER bar:NAM14 from:-155 till:-150 text:Camptosaurus color:HER bar:NAM15 from:-77 till:-73 text:Centrosaurus color:CAR bar:NAM16 from:-155 till:-145 text:Ceratosaurus color:CAR bar:NAM17 from:-215 till:-210 text:Coelophysis color:HER bar:NAM18 from:-77 till:-73 text:Corythosaurus color:CAR bar:NAM19 from:-125 till:-100 text:Deinonychus color:HER bar:NAM20 from:-152 till:-147 text:Diplodocus color:HER bar:NAM21 from:-155 till:-145 text:Dryosaurus color:HER bar:NAM22 from:-70 till:-65 text:Edmontonia color:HER bar:NAM23 from:-73 till:-65 text:Edmontosaurus color:HER bar:NAM24 from:-155 till:-150 text:Eobrontosaurus color:HER bar:NAM25 from:-70 till:-65 text:Eotriceratops color:OMN bar:NAM26 from:-130 till:-125 text:Falcarius color:CAR bar:NAM27 from:-77 till:-74 text:Gorgosaurus color:HER bar:NAM28 from:-83 till:-75 text:Gryposaurus color:HER bar:NAM29 from:-156 till:-144 text:Haplocanthosaurus color:HER bar:NAM30 from:-76 till:-68 text:Hypacrosaurus color:HER bar:NAM31 from:-75 till:-71 text:Kritosaurus color:HER bar:NAM32 from:-77 till:-74 text:Lambeosaurus color:HER bar:NAM33 from:-70 till:-65 text:Leptoceratops color:CAR bar:NAM34 from:-200 till:-194 text:Megapnosaurus color:HER bar:NAM35 from:-83 till:-70 text:Monoclonius color:HER bar:NAM36 from:-70 till:-68 text:Montanoceratops color:HER bar:NAM37 from:-87 till:-82 text:Niobrarasaurus color:CAR bar:NAM38 from:-150 till:-145 text:Ornitholestes color:HER bar:NAM39 from:-76 till:-68 text:Ornithomimus color:HER bar:NAM40 from:-70 till:-65 text:Pachycephalosaurus color:HER bar:NAM41 from:-76 till:-73 text:Parasaurolophus color:HER bar:NAM42 from:-75 till:-73 text:Pentaceratops color:HER bar:NAM43 from:-72 till:-68 text:Saurolophus color:CAR bar:NAM44 from:-155 till:-145 text:Saurophaganax color:HER bar:NAM45 from:-112 till:-108 text:Sauroposeidon color:HER bar:NAM46 from:-200 till:-196 text:Scutellosaurus color:HER bar:NAM47 from:-83 till:-65 text:Stegoceras color:HER bar:NAM48 from:-150 till:-145 text:Stegosaurus color:OMN bar:NAM49 from:-77 till:-70 text:Struthiomimus color:HER bar:NAM50 from:-77 till:-75 text:Styracosaurus color:HER bar:NAM51 from:-125 till:-105 text:Tenontosaurus color:HER bar:NAM52 from:-66 till:-65 text:Thescelosaurus color:HER bar:NAM53 from:-68 till:-65 text:Torosaurus color:CAR bar:NAM54 from:-150 till:-145 text:Torvosaurus color:HER bar:NAM55 from:-68 till:-65 text:Triceratops color:CAR bar:NAM56 from:-69 till:-65 text:Tyrannosaurus color:CAR bar:NAM57 from:-132 till:-119 text:Utahraptor color:HER bar:NAM58 from:-75 till:-71 text:Velafrons color:HER bar:NAM59 from:-93 till:-89 text:Zuniceratops PlotData= align:center textcolor:black fontsize:M mark:(line,black) width:25 bar:period from: -145 till: -65 color:cretaceous text:Cretaceous from: -200 till: -145 color:jurassic text:Jurassic from: -250 till: -200 color:triassic text:Triassic bar:era from: -250 till: -65 color:mesozoic text:Mesozoic ==Criteria for inclusion== *The creature must appear on the List of dinosaurs. *Fossils of the creature must have been found in North America. *This list is a complement to :Category:Dinosaurs of North America.