List of North American dinosaurs

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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.

History

The earliest record of dinosaurs in North America comes from rare, unidentified (possibly theropod) footprints and teeth in the Middle-Late Triassic Pekin Formation of North Carolina.[1] Later in the Triassic period, dinosaurs left more recognizable remains, and could thus be identified as specific genera. Examples of later Triassic North American dinosaur genera include Coelophysis, Chindesaurus, Gojirasaurus, and Tawa. Fossils of Tawa-like dinosaurs have also been found in South America, which has important indications about paleogeography. During the Early Jurassic Period, dinosaurs such as Dilophosaurus, Anchisaurus, Coelophysis (formerly known as Megapnosaurus), and the early thyreophoran Scutellosaurus lived in North America. The latter is believed to have been the ancestor of all stegosaurs and ankylosaurs. 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.

VOA report about North American dinosaurs

The Late Jurassic of North America, however, is the exact opposite of the Middle Jurassic. The Late 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. The roster of dinosaurs from the Morrison is impressive. Among the theropods, Allosaurus, Saurophaganax, Torvosaurus, Ceratosaurus, Coelurus, Ornitholestes, Tanycolagreus, Stokesosaurus, and Marshosaurus are found in the Morrison. An abundance of sauropods has been found there, including Apatosaurus, Diplodocus, Barosaurus, Brachiosaurus, Camarasaurus, Brontosaurus and Amphicoelias. Three genera of stegosaurs, Alcovasaurus, Stegosaurus and Hesperosaurus, have been found there. Finally, ornithopods found in the Morrison include Dryosaurus, Camptosaurus, Drinker, Othnielia, and Othnielosaurus.

During the Early Cretaceous, new dinosaurs evolved to replace the old ones. Sauropods were still present, but they were not as diverse as they were in the Jurassic Period. Theropods from the Early Cretaceous of North America include dromaeosaurids such as Deinonychus and Utahraptor, Acrocanthosaurus, and Microvenator. Sauropods included Astrodon, Brontomerus, and Sauroposeidon. Ornithischians were more diverse than they were in the Jurassic Period. Tenontosaurus, Dakotadon, Protohadros, and Eolambia are some of the ornithopods that lived during this time period. 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, during the Late Cretaceous Period, the greatest abundance and diversity of dinosaurs of all time lived in North America. During the early part of the Late Cretaceous, the therizinosaur Nothronychus and the ceratopsian Zuniceratops lived. During the Campanian stage of the Late Cretaceous, an enormous diversity of dinosaurs is known. Theropods included the tyrannosaurs Albertosaurus, Gorgosaurus, Daspletosaurus, Teratophoneus, Bistahieversor, and Appalachiosaurus, and the dromaeosaurids Dromaeosaurus, Saurornitholestes, Atrociraptor, and Bambiraptor. Ceratopsians, such as Pachyrhinosaurus, Styracosaurus, Centrosaurus, Monoclonius, Brachyceratops and Pentaceratops also existed. Among hadrosaurs, Hypacrosaurus, Gryposaurus, Kritosaurus, Parasaurolophus, Corythosaurus, Lambeosaurus and Prosaurolophus existed. During the latest Cretaceous, the Maastrichtian age, the diversity of dinosaurs saw a decline from the preceding Campanian stage. North American herbivorous dinosaurs from this time period include the titanosaur sauropod Alamosaurus, the ceratopsians Bravoceratops, Regaliceratops, Triceratops, Leptoceratops, Torosaurus, Nedoceratops, Tatankaceratops (the latter two possible species of Triceratops), and Ojoceratops, the pachycephalosaurs Pachycephalosaurus, Stygimoloch, Dracorex, and Sphaerotholus, the hadrosaurs Augustynolophus, Saurolophus and Edmontosaurus, the ornithopod Thescelosaurus the ankylosaur Ankylosaurus and the nodosaurs Denversaurus, Glyptodontopelta and Edmontonia. Predatory dinosaurs from this time period included the tyrannosaurids Tyrannosaurus, Nanotyrannus (which may just be a juvenile of the former) and Dryptosaurus, the ornithomimids Ornithomimus, Dromiceiomimus, Struthiomimus, the oviraptorids Anzu, Leptorhynchos and Ojoraptorsaurus, the troodontids Pectinodon, Paronychodon and Troodon, the coelurosaur Richardoestesia and the dromaeosaurs Acheroraptor and Dakotaraptor.

The only dinosaur fossil from Central America currently is a femur of an ornithopod.,[2][3] discovered in the central part of Honduras in the year 1971 near San Luis, Comayagua Department, by Bruce Simonson and Gregory Horne. It was found in the highest part of the Valle de Angeles Redbeds. The fossil bone is in the US National Museum of Natural History in Washington (catalog number USNM PAL 181339). It was identified as ornithopod bone by John Ostrom,[3] and by Nicholas Hotton as the right femur of a small hadrosaur.[4]

There is also an older report of dinosaur fossil from Honduras documented only in US newspapers at 1933, but not scientifically documented . This report comments the discovery of a dinosaur ankle bone near the town of Olanchito, Yoro Department, Honduras; by the explorer Gregory Mason. This information is described on page 9 of The Washington Post of August 23, 1933, on page 8 of the newspaper The Norwalk Hour August 24, 1933[5] and on page 6 of Nebraska newspaper The Plattsmouth Journal of August 21 of 1933[6]

Criteria for inclusion

Inclusion criteria:

List

Alamosaurus.
Albertaceratops.
Allosaurus.
Anchiceratops.
Ankylosaurus.
Apatosaurus.
Barosaurus.
Brachyceratops.
Camarasaurus.
Cerasinops.
Ceratosaurus.
Coelophysis.
Coelurus.
Deinonychus.
Diabloceratops.
Dilophosaurus.
Diplodocus.
Edmontonia.
Edmontosaurus.
Gryposaurus.
Monoclonius.
Rubeosaurus.
Saurolophus.
Scutellosaurus.
Stegosaurus.
Titanoceratops.
Torvosaurus.
Triceratops.
Tyrannosaurus.
Utahceratops.
Utahraptor.
Zuniceratops.
Key
Nomen dubium
Invalid
Nomen nudum
Name Period Diet[7] State (Country) Notes
Abydosaurus Cretaceous herbivore USA Last known sauropod in North America until appearance of Alamosaurus
Achelousaurus Cretaceous herbivore USA A "transitional form" between two other species of ceratopsians.
Acheroraptor Cretaceous carnivore USA One of the last dromaeosaurs.
Acristavus Cretaceous herbivore USA An early hadrosaur with no crest on its snout.
Acrocanthosaurus Cretaceous carnivore USA A large predator with a hump or sail on its back.
Acrotholus Cretaceous herbivore Canada North America's oldest pachycephalosaur.
Agathaumas Cretaceous herbivore USA Dubious, see article
Agujaceratops Cretaceous herbivore USA Formerly a species of Chasmosaurus.
Ahshislepelta Cretaceous herbivore USA An ankylosaur.
Akainacephalus Cretaceous herbivore USA A recently described well-preserved ankylosaur.
Alamosaurus Cretaceous herbivore Texas (USA) The last known sauropod from North America.
Alaskacephale Cretaceous herbivore Alaska (USA) A pachycephalosaur.
Albertaceratops Cretaceous herbivore Alberta (Canada) A basal centrosaurine ceratopsian. Montanan specimen reclassified as Medusaceratops
Albertadromeus Cretaceous herbivore Canada A small ornithischian.
Albertonykus Cretaceous carnivore/insectivore Canada One of North America's smallest adult non-avian dinosaurs.
Albertosaurus Cretaceous carnivore Canada Fossil evidence suggests it may have hunted in packs.
Alcovasaurus Jurassic herbivore USA Formerly a species of Stegosaurus and Natronasaurus.
Aletopelta Cretaceous herbivore USA Its remains were found in California, thought it may have lived closer to Mexico in life.
Allosaurus Jurassic carnivore Colorado, Montana, New Mexico, Kansas, Nebraska, Arizona, Idaho, Texas, North Dakota, Oklahoma, South Dakota, Utah, Wyoming (USA) Portugal & Tanzania As one of the first well-known theropod dinosaurs, it has long attracted attention outside of paleontological circles. Fossils also found in Europe & Africa.
Amphicoelias Jurassic herbivore USA A sauropod.
Anasazisaurus Cretaceous herbivore USA Intertwined with Gryposaurus and Kritosaurus throughout its history.
Anchiceratops Cretaceous herbivore Alberta (Canada) A ceratopsian.
Anchisaurus Jurassic herbivore USA A small basal sauropodomorph.
Angulomastacator Cretaceous herbivore USA A hadrosaur with an unusually-shaped jaw.
Animantarx Cretaceous herbivore USA Discovered during a radiological survey of the fossil site.
Ankylosaurus Cretaceous herbivore Montana (USA) Known for its heavily armored back.
Anodontosaurus Cretaceous herbivore Canada Formerly congeneric with Euoplocephalus.
Antrodemus Jurassic carnivore Probably synonymous with Allosaurus, see article
Anzu Cretaceous omnivore USA A large oviraptorosaur.
Apatodon Jurassic carnivore USA Highly dubious, see article
Apatosaurus Jurassic herbivore Colorado, Oklahoma, New Mexico, Utah (USA) Formerly congeneric with Brontosaurus
Appalachiosaurus Cretaceous carnivore USA One of the few non-avian dinosaurs from the eastern side of North America.
Aquilarhinus Cretaceous herbivore USA A hadrosaur from Big Bend National Park in Texas, described in 2019.
Arkansaurus Cretaceous omnivore USA A nomen nudum for 41 years before being officially described in 2018.
Arrhinoceratops Cretaceous herbivore Canada A ceratopsian.
Astrodon Cretaceous herbivore USA State dinosaur of Maryland.
Astrophocaudia Cretaceous herbivore USA A sauropod.
Atlantosaurus Jurassic herbivore USA Probably the same as Apatosaurus.
Atrociraptor Cretaceous carnivore Canada A close relative of Saurornitholestes.
Augustynolophus Cretaceous herbivore USA State dinosaur of California.
Aublysodon Cretaceous carnivore USA Dubious, see article.
Avaceratops Cretaceous herbivore USA A small ceratopsian.
Bambiraptor Cretaceous carnivore USA Named after the familiar character due to its small size.
Barosaurus Jurassic herbivore USA Probably one of the largest dinosaurs.
Beelemodon Jurassic carnivore USA Possibly a coelurosaur.
Bistahieversor Cretaceous carnivore USA A tyrannosaur.
Brachiosaurus Jurassic herbivore USA A familiar sauropod.
Brachyceratops Cretaceous herbivore USA Only juvenile fossils found so far
Brachylophosaurus Cretaceous herbivore USA and Canada A hadrosaur known from several well-preserved "mummies"
Bravoceratops Cretaceous herbivore USA A large ceratopsian.
Brontomerus Cretaceous herbivore USA Possibly dubious.
Brontosaurus Jurassic herbivore USA Formerly congeneric with Apatosaurus.
Camarasaurus Jurassic herbivore Probably the most common sauropod of Late Jurassic times.
Camposaurus Triassic carnivore A coelophysoid theropod.
Camptosaurus Jurassic herbivore A large, stocky ornithopod.
Capitalsaurus Cretaceous carnivore Official dinosaur of the District of Columbia. The intersection near where it was found is now nicknamed "Capitalsaurus Court".
Caseosaurus Triassic carnivore Possibly the same as Chindesaurus.
Cathetosaurus Jurassic herbivore Formerly congeneric with Camarasaurus, split due to its unusual proportions.
Cedarosaurus Cretaceous herbivore A large Early Cretaceous sauropod.
Cedarpelta Cretaceous herbivore Shows a strange mix of primitive and advanced features.
Cedrorestes Cretaceous herbivore The species name was named after the author of Jurassic Park.
Centrosaurus Cretaceous herbivore Not to be confused with Kentrosaurus
Cerasinops Cretaceous herbivore A small basal ceratopsian.
Ceratops Cretaceous herbivore Type genus of the Ceratopsia and the Ceratopsidae. Currently considered dubious.
Ceratosaurus Jurassic carnivore A large predator with armor scutes along its back.
Chasmosaurus Cretaceous herbivore A ceratopsian known from multiple remains.
Chindesaurus Triassic carnivore A herrerasaurid saurischian.
Chirostenotes Cretaceous carnivore An oviraptorosaur originally known from assorted body parts.
Cionodon Cretaceous herbivore A hadrosaur.
Claorhynchus Cretaceous herbivore Dubious, see article
Claosaurus Cretaceous herbivore A small basal hadrosauroid.
Coahuilaceratops Cretaceous herbivore Has the longest brow horns of any ceratopsian.
Coelophysis Triassic/Jurassic carnivore A populous, long-lived genus. Includes "Megapnosaurus" and "Syntarsus".
Coelurus Jurassic carnivore The genus the Coelurosauria was named after.
Coelosaurus Cretaceous carnivore This name is preoccupied, but by what is unknown.
Colepiocephale Cretaceous herbivore The name means "kuncklehead".
Comanchesaurus Triassic carnivore Possibly an indeterminate saurischian.
Coronosaurus Cretaceous herbivore Once a species of Centrosaurus.
Corythosaurus Cretaceous herbivore A hadrosaur with a crest that resembles half a dinner plate.
Daemonosaurus Triassic carnivore An early theropod with a short snout and "buck teeth".
Dakotadon Cretaceous herbivore Once an American species of Iguanodon.
Dakotaraptor Cretaceous carnivore Latest known dromaeosaurid
Daspletosaurus Cretaceous carnivore Possibly the direct ancestor of T. rex
Deinodon Cretaceous carnivore Dubious, see article
Deinonychus Cretaceous carnivore Its discovery suggests non-avian dinosaurs were warm-blooded creatures, and influenced the design of Velociraptor in Jurassic Park.
Diabloceratops Cretaceous herbivore One of the oldest centrosaurine ceratopsid.
Diclonius Cretaceous herbivore Shares its name with an alien race in the manga series Elfen Lied.
Dilophosaurus Jurassic carnivore Despite its appearance in the film Jurassic Park, it didn't have frills and probably couldn't spit poison.
Diplodocus Jurassic herbivore A long, low sauropod.
Diplotomodon Cretaceous carnivore Confused with various other vertebrates throughout its history.
Dracorex Cretaceous herbivore Possibly a juvenile Pachycephalosaurus.
Drinker Jurassic herbivore Named after paleontologist Edward Drinker Cope.
Dromaeosaurus Cretaceous carnivore Type genus of the Dromaeosauridae (the "raptors")
Dromiceiomimus Cretaceous omnivore One of the fastest non-avian dinosaurs.
Dryosaurus Jurassic herbivore A large, fast ornithopod.
Dryptosaurus Cretaceous carnivore Best known from a painting by Charles Knight.
Dyoplosaurus Cretaceous herbivore Has a convoluted taxonomic history.
Dynamoterror Cretaceous carnivore A recently-described tyrannosaur from New Mexico.
Dysganus Cretaceous herbivore A ceratopsid.
Dyslocosaurus Jurassic herbivore It may have had four toes on its hind legs (unlike other sauropods which only have three)
Dystrophaeus Jurassic herbivore Recently found to be a dicraeosaurid.
Edmontonia Cretaceous herbivore Known for its double-pointed shoulder spikes.
Edmontosaurus Cretaceous herbivore Includes "Anatotitan"
Einiosaurus Cretaceous herbivore A ceratopsian with a forward-curving horn on its nose.
Eolambia Cretaceous herbivore A hadrosauroid.
Eotrachodon Cretaceous herbivore One of the few non-avian dinosaurs from Appalachia.
Eotriceratops Cretaceous herbivore Possibly the largest species of ceratopsian.
Epanterias Jurassic carnivore May be the same as Allosaurus.
Epichirostenotes Cretaceous carnivore An oviraptorosaur.
Euoplocephalus Cretaceous herbivore Known from several good specimens.
Falcarius Cretaceous herbivore/omnivore A transitional form between carnivorous theropods and herbivorous therizinosaurs.
Ferrisaurus Cretaceous herbivore A leptoceratopsid; the first non-avian dinosaur described from British Columbia, Canada.
Fruitadens Jurassic omnivore One of the smallest non-avian dinosaurs.
Galeamopus Jurassic herbivore Formerly assigned to Diplodocus.
Gargoyleosaurus Jurassic herbivore A Jurassic ankylosaur.
Gastonia Cretaceous herbivore An ankylosaur with multiple shoulder spikes.
Geminiraptor Cretaceous carnivore A troodontid.
Glishades Cretaceous herbivore Possibly a juvenile of an already known species.
Glyptodontopelta Cretaceous herbivore One of the last nodosaurids.
Gojirasaurus Triassic carnivore A predator named after Godzilla because of its size.
Gorgosaurus Cretaceous carnivore A tyrannosaur.
Gravitholus Cretaceous herbivore A relatively obscure pachycephalosaur.
Gryphoceratops Cretaceous herbivore A leptoceratopsid ceratopsian.
Gryposaurus Cretaceous herbivore A hadrosaur that may have eaten crabs.
Hadrosaurus Cretaceous herbivore The first non-avian dinosaur found in North America.
Hagryphus Cretaceous carnivore A relatively large oviraptorosaur.
Hanssuesia Cretaceous herbivore Formerly a species of Stegoceras.
Haplocanthosaurus Jurassic herbivore Either a diplodocid or a macronarian.
Hesperonychus Cretaceous carnivore A small dromaeosaur.
Hesperosaurus Jurassic herbivore A stegosaur that may have possessed sexual dimorphism.
Hippodraco Cretaceous herbivore An ornithopod.
Hoplitosaurus Cretaceous herbivore A poorly-known ankylosaur.
Huehuecanauhtlus Cretaceous herbivore One of the few known ornithopods from Mexico.
Hypacrosaurus Cretaceous herbivore A hadrosaur that may have cared for its young.
Hypsibema Cretaceous herbivore State dinosaur of Missouri.
Iguanacolossus Cretaceous herbivore An ornithopod.
Jeyawati Cretaceous herbivore Named after the Zuni for "grinding mouth".
Judiceratops Cretaceous herbivore The oldest chasmosaurine ceratopsian.
Kaatedocus Jurassic herbivore A sauropod known for its "toothy smile".
Kayentavenator Jurassic carnivore A large theropod of the Early Jurassic.
Koparion Jurassic carnivore Possibly an early troodontid.
Kosmoceratops Cretaceous herbivore Has the most horns of any ceratopsian.
Kritosaurus Cretaceous herbivore A hadrosaur with a large bump on its nose.
Labocania Cretaceous carnivore An indeterminate theropod, possibly a tyrannosaur or a carcharodontosaurid.
Lambeosaurus Cretaceous herbivore A hadrosaur with a hollow, hatchet-shaped crest.
Laosaurus Jurassic/Cretaceous herbivore Possibly the same as another of the Morrison neornithischians.
Latenivenatrix Cretaceous carnivore Formerly assigned to Troodon.
Latirhinus Cretaceous herbivore Not to be confused with Altirhinus.
Leptoceratops Cretaceous herbivore A basal ceratopsian that lived towards the end of the Mesozoic.
Leptorhynchos Cretaceous omnivore An oviraptorosaur.
Lophorhothon Cretaceous herbivore The first non-avian dinosaur found in Alabama.
Lythronax Cretaceous carnivore A tyrannosaur with one tooth larger than the rest of its teeth.
Magnapaulia Cretaceous herbivore A very large hadrosaur.
Magulodon Cretaceous herbivore Not to be confused with Megalodon.
Maiasaura Cretaceous herbivore Its fossils suggest hadrosaurs cared for their young.
Marshosaurus Jurassic carnivore A carnivore related to Megalosaurus.
Martharaptor Cretaceous carnivore A therizinosaur.
Medusaceratops Cretaceous herbivore Named after the snake-haired woman of Greek myth, which its horns are said to resemble.
Mercuriceratops Cretaceous herbivore Named after the winged messenger of the gods in Roman mythology.
Microcephale Cretaceous herbivore Possibly a very tiny pachycephalosaur.
Microvenator Cretaceous carnivore An oviraptorosaur.
Moabosaurus Cretaceous herbivore First appeared as a nomen nudum in 2006 and only formally described in 2017.
Mojoceratops Cretaceous herbivore Probably the same as Chasmosaurus.
Monoclonius Cretaceous herbivore Probably the same as Centrosaurus.
Montanoceratops Cretaceous herbivore A basal ceratopsian originally thought to have a horn on its snout.
Moros Cretaceous carnivore A small-bodied basal tyrannosauroid.
Mymoorapelta Jurassic herbivore A Jurassic ankylosaur.
Naashoibitosaurus Cretaceous herbivore A hadrosaur.
Nanosaurus Jurassic herbivore May include Drinker, Othnielia and Othnielosaurus.
Nanuqsaurus Cretaceous carnivore A small tyrannosaur from polar latitudes.
Nanotyrannus Cretaceous carnivore Possibly a T. rex juvenile
Nasutoceratops Cretaceous herbivore A ceratopsian known for its large nose and cow-like horns.
Nedcolbertia Cretaceous carnivore An ornithomimosaur.
Nedoceratops Cretaceous herbivore Includes "Diceratops". May be a Triceratops individual.
Niobrarasaurus Cretaceous herbivore A nodosaur.
Nodocephalosaurus Cretaceous herbivore An ankylosaur.
Nodosaurus Cretaceous herbivore Type genus of the Nodosauridae.
Nothronychus Cretaceous herbivore North America's most complete known therizinosaur.
Ojoceratops Cretaceous herbivore May belong to either Triceratops or Eotriceratops.
Ojoraptorsaurus Cretaceous omnivore An oviraptorosaur.
Oohkotokia Cretaceous herbivore An ankylosaur of uncertain relationships.
Orcomimus Cretaceous omnivore Reportedly an ornithomimosaur.
Ornitholestes Jurassic carnivore A basal coelurosaur.
Ornithomimus Cretaceous omnivore Type genus of the Ornithomimosauria.
Orodromeus Cretaceous herbivore A neornithischian.
Oryctodromeus Cretaceous herbivore Possibly a burrower.
Osmakasaurus Cretaceous herbivore An iguanodont.
Othnielia Jurassic herbivore Named after scientist Othniel Charles Marsh.
Othnielosaurus Jurassic herbivore Most Othnielia remains have been transferred to this animal.
Pachycephalosaurus Cretaceous herbivore Has a dome on the top of its head.
Pachyrhinosaurus Cretaceous herbivore Three species are known that have different head shapes.
Palaeopteryx Jurassic insectivore Dubious, see article
Palaeoscincus Cretaceous herbivore Dubious, see article
Panoplosaurus Cretaceous herbivore A nodosaur.
Parasaurolophus Cretaceous herbivore A hadrosaur known for its large, long, tube-like crest.
Parksosaurus Cretaceous herbivore A neornithischian.
Paronychodon Cretaceous carnivore A tooth taxon.
Pawpawsaurus Cretaceous herbivore A nodosaur.
Peloroplites Cretaceous herbivore A large nodosaur.
Pectinodon Cretaceous carnivore A possibly dubious tooth taxon.
Pentaceratops Cretaceous herbivore Despite its name, it only has three horns.
Planicoxa Cretaceous herbivore An iguanodont.
Plateosaurus Trassic herbivore An prosauropod.
Podokesaurus Jurassic carnivore Highly dubious; may be the same as Coelophysis.
Polyonax Cretaceous herbivore Possibly a ceratopsian.
Prenoceratops Cretaceous herbivore A basal ceratopsian.
Priconodon Cretaceous herbivore A nodosaur.
Propanoplosaurus Cretaceous herbivore Known from the imprints of a skeleton, not actual fossilized bones.
Prosaurolophus Cretaceous herbivore A large saurolophine hadrosaur.
Protoavis Triassic carnivore Dubious, see article
Protohadros Cretaceous herbivore Actually a non-hadrosaur iguanodont.
Pteropelyx Cretaceous herbivore A dubious hadrosaur.
Richardoestesia Cretaceous carnivore Similar-looking teeth have been found in South America, Europe, and Asia.
Rubeosaurus Cretaceous herbivore May be the same as Styracosaurus, and Brachyceratops may represent its juveniles.
Sarahsaurus Jurassic herbivore Once thought to represent American specimens of Massospondylus.
Saurolophus Cretaceous herbivore A species is also found in Mongolia.
Sauropelta Cretaceous herbivore A nodosaur with a long tail.
Saurophaganax Jurassic carnivore Possibly the top land predator of the Late Jurassic
Sauroposeidon Cretaceous herbivore Possibly the tallest known dinosaur.
Saurornitholestes Cretaceous carnivore A dromaeosaur.
Scolosaurus Cretaceous herbivore An ankylosaur with a convoluted taxonomic history.
Scutellosaurus Jurassic herbivore A basal, bipedal thyreophoran.
Segisaurus Jurassic carnivore A coelophysoid.
Seitaad Jurassic herbivore A sauropodomorph whose holotype specimen may have died during the collapse of a sand dune.
Siats Cretaceous carnivore The largest carnivorous dinosaur in North America before the appearance of T. rex.
Silvisaurus Cretaceous herbivore A relatively obscure nodosaur.
Sonorasaurus Cretaceous herbivore State dinosaur of Arizona.
Sphaerotholus Cretaceous herbivore A pachycephalosaur.
Spinops Cretaceous herbivore Its holotype specimen was once said as being "nothing but rubbish".
Stegoceras Cretaceous herbivore Not to be confused with Stegosaurus.
Stegopelta Cretaceous herbivore An ankylosaur.
Stegosaurus Jurassic herbivore Well-known for the plates and spikes on its back.
Stenonychosaurus Cretaceous carnivore Most Troodon remains were transferred to this genus.
Stephanosaurus Cretaceous herbivore May be the same as Lambeosaurus.
Stokesosaurus Jurassic carnivore A tyrannosauroid.
Struthiomimus Cretaceous omnivore An ornithomimosaur.
Stygimoloch Cretaceous herbivore May be a subadult Pachycephalosaurus.
Styracosaurus Cretaceous herbivore Known for the spikes that surrounded its frill.
Supersaurus Jurassic herbivore A very large dinosaur.
Suskityrannus Cretaceous Carnivore Formerly nicknamed "Zunityrannus".
Suuwassea Jurassic herbivore The first known North American dicraeosaurid.
Talos Cretaceous carnivore Named for a bronze automaton in Greek mythology.
Tanycolagreus Jurassic carnivore Possibly a tyrannosauroid.
Tatankacephalus Cretaceous herbivore An ankylosaur.
Tatankaceratops Cretaceous herbivore Possibly a juvenile Triceratops.
Tawa Triassic carnivore A very primitive dinosaur.
Tenontosaurus Cretaceous herbivore An iguanodont with a very long tail.
Teratophoneus Cretaceous carnivore A tyrannosaur.
Texacephale Cretaceous herbivore Unusual structures on its head have been compared to gears.
Texasetes Cretaceous herbivore A nodosaur.
Theiophytalia Cretaceous herbivore A skull of Camptosaurus has been referred to this genus.
Thescelosaurus Cretaceous herbivore One specimen was once thought to have preserved its heart.
Thespesius Cretaceous herbivore A hadrosaur.
Tichosteus Jurassic herbivore Probably an ornithopod.
Titanoceratops Cretaceous herbivore It has one of the largest skulls of any known animal.
Torosaurus Cretaceous herbivore Once thought to have been an adult Triceratops.
Torvosaurus Jurassic carnivore A large theropod.
Trachodon Cretaceous herbivore Dubious, see article
Triceratops Cretaceous herbivore Known for the three horns and the frill on its head.
Troodon Cretaceous carnivore Formerly included Stenonychosaurus and Polyodontosaurus.
Tyrannosaurus Cretaceous carnivore The most well-known non-avian dinosaur.
Unescoceratops Cretaceous herbivore A leptoceratopsid.
Utahceratops Cretaceous herbivore A ceratopsid.
Utahraptor Cretaceous carnivore The largest known dromaeosaur.
Uteodon Jurassic herbivore Formerly assigned to Camptosaurus.
Vagaceratops Cretaceous herbivore A chasmosaurine ceratopsian.
Velafrons Cretaceous herbivore A hadrosaur from Mexico.
Venenosaurus Cretaceous herbivore A sauropod.
Xenoceratops Cretaceous herbivore A centrosaurine ceratopsid.
Yurgovuchia Cretaceous carnivore A dromaeosaur.
Zapsalis Cretaceous carnivore A tooth taxon that may represent a dromaeosaur.
Zephyrosaurus Cretaceous herbivore A neornithischian.
Ziapelta Cretaceous herbivore Named after the Zia sun symbol on the flag of New Mexico.
Zuniceratops Cretaceous herbivore One of the oldest ceratopsians with horns.
Zuul Cretaceous herbivore Named after Zuul from the film Ghostbusters.

Timeline

This is a timeline of selected dinosaurs from the list above. Time is measured in Ma, megaannum, along the x-axis.

MesozoicTriassicJurassicCretaceousLeptoceratopsEdmontosaurus annectensThescelosaurusTyrannosaurusAnkylosaurusTriceratopsTorosaurusEotriceratopsSaurolophusPachycephalosaurusAlamosaurusMontanoceratopsAlbertosaurusAnchiceratopsVelafronsEdmontosaurus regalisKritosaurusZiapeltaBrachyceratopsHypacrosaurusStruthiomimusPentaceratopsStyracosaurusParasaurolophusOrnithomimusEdmontoniaMonocloniusLambeosaurusCorythosaurusCentrosaurusGorgosaurusTroodonStegocerasBrachylophosaurusGryposaurusNiobrarasaurusZuniceratopsSauroposeidonTenontosaurusDeinonychusAcrocanthosaurusUtahraptorYurgovuchiaFalcariusOrnitholestesBrachiosaurusSaurophaganaxApatosaurusBarosaurusTorvosaurusCeratosaurusDiplodocusHaplocanthosaurusStegosaurusAllosaurusDryosaurusCamarasaurusBrontosaurusCamptosaurusScutellosaurusMegapnosaurusCoelophysisMesozoicTriassicJurassicCretaceous

See also

References

  1. ^ "CGS Interactive Field Trips". www.ncgeology.com. Retrieved 2016-04-13.
  2. ^ LUCAS, S. G., 2014: Vertebrate paleontology in Central America: 30 years of progress.- Rev. Geol. Amér. Central, Número
  3. ^ a b Horne, Gregory S., M. G. Atwood, and Allen P. King. 1974. “Stratigraphy, Sedimentology, and Paleoenvironment of Esquias Formation of Honduras.” AAPG Bulletin 58 (2): 176–88.
  4. ^ Horne, Gregory S. 1994. “A Mid-Cretaceous Ornithopod from Central Honduras.” Journal of Vertebrate Paleontology 14 (1): 147–50
  5. ^ "The Norwalk Hour - Búsqueda en el archivo de Google Noticias".
  6. ^ "Archived copy". Archived from the original on 2016-03-10. Retrieved 2016-03-09.{{cite web}}: CS1 maint: archived copy as title (link)
  7. ^ Diet is sometimes hard to determine for dinosaurs and should be considered a "best guess"
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