• species
  • He thought it probably belonged to the genus Tanystropheus (thought to be a theropod at the time), and named a new species for it, Tanystropheus posthumus. (wikipedia.org)
  • Many species have been named in the genus, but only the type species Thecodontosaurus antiquus is seen as valid today. (wikipedia.org)
  • A reassessment of the holotype UCMP 34498 of Camposaurus arizoniensis by Ezcurra and Brusatte revealed two autapomorphies, thereby firmly establishing this material as a valid genus and species. (wikipedia.org)
  • However, others have been assigned in the past, and there is no broad consensus on the species taxonomy of plateosaurid dinosaurs. (wikipedia.org)
  • The genus was first named by David Lambert in 1983 and the type species is Coloradisaurus brevis. (wikipedia.org)
  • Lagosuchus is regarded by some to be dubious and the second species assigned to the genus, L. lilloensis, was reclassified as Marasuchus by Paul Sereno in 1994. (wikipedia.org)
  • In 1993 Gilles Cuny and Peter Galton described a new species that they assigned to this genus, Liliensternus airelensis. (wikipedia.org)
  • Other researchers began to notice differences between L. airelensis and the type species, L. liliensterni, and in 2007, Martin Ezcurra and Cuny assigned the material to its own genus, Lophostropheus. (wikipedia.org)
  • One specimen originally assigned to Chindesaurus, from the Tecovas Formation of Texas, was later placed in its own genus and species, Caseosaurus crosbyensis. (wikipedia.org)
  • Fraas in 1913 named the genus Procompsognathus with as type species, Procompsognathus triassicus. (wikipedia.org)
  • About 95% of all species and about 60% of the genera died out, including many marine animals (like the trilobite). (littleexplorers.com)
  • and early species of gymnosperms (seed plants, such as the evergreens, in which the seeds are not enclosed) dominate the Triassic terrain . (littleexplorers.com)
  • It's long been known that massive increases in emission of CO 2 from volcanoes, associated with the opening of the Atlantic Ocean in the end-Triassic Period, set off a shift in state of the climate which caused global mass extinction of species, eliminating about 34% of genera. (blogspot.com)
  • The type species C. bauri, originally given to the genus Coelurus by Edward Drinker Cope in 1887, was described by the latter in 1889. (dinosaurstop.com)
  • Coelophysis is known from a number of complete fossil skeletons of the species C. bauri, which was a lightly built dinosaur which measured up to 3 metres (9.8 ft) in length and which was more than a meter tall at the hips. (dinosaurstop.com)
  • The Wollemia is a genus ( tribe ) of coniferous trees consisting of a single species - Wollemia nobilis. (blogspot.com)
  • At certain points in Earth's history, vast numbers of different species of living organisms around the world have died out within a relatively short period of time. (devtome.com)
  • Rhaetian
  • The only material assigned to this genus from later strata was discovered in 1913 in blue claystone from the Rhaetian stage of the Late Triassic, in the Trossingen Formation from Sachsen-Anhalt, Germany, approximately 208 to 201 million years ago. (wikipedia.org)
  • theropods
  • A cladistic analysis of Tawa and other early theropods indicate that the Coelophysoidea, a group of early dinosaurs, may be an artificial grouping because Tawa combines classic coelophysoid features with features which appear to be ancestral to the neotheropods. (wikipedia.org)
  • 1(1), 1908, p. 1-Rauhut, O.M.W. & Hungerbühler, A. (2000) "A review of European Triassic theropods. (wikipedia.org)
  • Theropods, dominant carnivores of the Mesozoic, were bipedal and include some of the smallest (eg, genus Compsognathus , less than 3 kg) and largest known dinosaurs. (thecanadianencyclopedia.com)
  • Although dinosaurs are legendary for their small brains, some smaller theropods had relatively large brains, comparable to those of primitive mammals . (thecanadianencyclopedia.com)
  • 1834
  • Discovered in 1834 by Johann Friedrich Engelhardt and described three years later by Hermann von Meyer, Plateosaurus was the fifth named dinosaur genus that is still considered valid. (wikipedia.org)
  • Predatory
  • 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 and Struthiomimus, the oviraptorids Anzu, Leptorhynchos and Ojoraptorsaurus, the troodontids Pectinodon, Paronychodon and Troodon, the coelurosaur Richardoestesia and the dromaeosaurs Acheroraptor and Dakotaraptor. (wikipedia.org)
  • Predatory dinosaurs of the world. (wikipedia.org)
  • Gondwana
  • The vast supercontinent of Pangaea existed until the mid-Triassic, after which it began to gradually rift into two separate landmasses, Laurasia to the north and Gondwana to the south. (hitchhikersgui.de)
  • formations
  • F. von Huene, Die Dinosaurier der Europäischen Triasformation mit berücksichtigung der Ausseuropäischen vorkommnisse [The dinosaurs of the European Triassic formations with consideration of occurrences outside Europe, Geologische und Palaeontologische Abhandlungen Suppl. (wikipedia.org)
  • Guidebook to the Triassic Formations of the Colorado Plateau in Northern Arizona: Geology, Paleontology, and History. (wikipedia.org)
  • Paleontology
  • Actas de las I Jornadas Internacionales sobre Paleontologia de Dinosaurios y su Entorno [Proceedings of the First International Symposium on Paleontology of Dinosaurs and Their Environment], 25-92. (wikipedia.org)
  • Dinosaurs portal Saurischia 2009 in paleontology Alcober, Oscar A. (wikipedia.org)
  • This dinosaur was named in his honor for his furthering paleontology in Germany by founding a paleontological museum in his castle in Bedheim, Germany on 1 July 1934. (wikipedia.org)
  • Besanosaurus" Encyclo: online Encyclopedia "Besanosaurus" Dinosaur and Paleontology Dictionary "Besanosaurus: A six-meter-long Ichthyosaur from Northern Italy" La Tua Enciclopedia on-line Archived February 20, 2010, at the Wayback Machine. (wikipedia.org)
  • skull
  • This skull is that of a young hadrosaurid or duck-billed dinosaur, possibly aged 3-4 years. (angelfire.com)
  • When the huge skull with its three horns was first studied, academics thought this was a dinosaur that would have looked horrible, but to us when viewing a reconstructed Triceratops skeleton we think it is rather beautiful. (everythingdinosaur.co.uk)
  • ancestral
  • It shows features intermediate between those of the two main hadrosaurid groups, and may represent an ancestral form that evolved from an earlier iguanodontid dinosaur. (angelfire.com)
  • A neck vertebrae adaptation in Tawa supports the hypothesis that cervical air sacs predate the origin of the Neotheropoda and may be ancestral for saurischians, and also links the dinosaurs with the evolution of birds. (wikipedia.org)
  • While recent discoveries have made it more difficult to present a universally agreed-upon list of dinosaurs' distinguishing features, nearly all dinosaurs discovered so far share certain modifications to the ancestral archosaurian skeleton. (newworldencyclopedia.org)
  • million
  • Tanystrosuchus is a dubious genus of theropod dinosaur from the late Triassic period (middle Norian stage, around 208 million years ago). (wikipedia.org)
  • When dinosaurs became extinct from the effects of a massive asteroid hitting Earth 65 million years ago, there were more varieties of the reptiles living than ever before, according to a new analysis of global fossil records by a team of researchers led by a University of Rhode Island paleontologist. (innovations-report.com)
  • Our analysis finally lays to rest the old, utterly unsupported idea that dinosaurs were declining in diversity during the last 10 million years of their time on Earth," said David Fastovsky, URI professor of geosciences. (innovations-report.com)
  • Dinosaur diversity was increasing logarithmically throughout their 160 million years on Earth," said Fastovsky, who is conducting research at the National Autonomous University of Mexico through July 2005 as a Fulbright Scholar. (innovations-report.com)
  • The syntypes were discovered by Count Hugo Rühle von Lilienstern in the winter of 1932/1933 in marlstone (lime-rich mudstone) deposited in the Norian stage of the Late Triassic period, approximately 228 to 208 million years ago. (wikipedia.org)
  • Chindesaurus (/ˌtʃɪndɪˈsɔːrəs/ CHIN-di-SAWR-əs) is a genus of herrerasaurid theropod dinosaur that lived approximately 235-210 million years ago during the latter part of the Triassic Period in what is now the Southwestern United States. (wikipedia.org)
  • Procompsognathus /ˌproʊkɒmpˈsɒɡnəθəs/ is an extinct genus of coelophysid theropod dinosaur that lived approximately 210 million years ago during the later part of the Triassic Period, in what is now Germany. (wikipedia.org)
  • at the beginning of the Triassic, 220 million years ago, decreased the amount of shoreline, formed mountains, and gave the interior of the supercontinent a dry, desert-like terrain. (littleexplorers.com)
  • Dinosaurs would become increasingly dominant, abundant and diverse, and remained that way for the next 150 million years. (littleexplorers.com)
  • Ammonoids characterized by a more highly folded suture, called ceratite, replaced the goniatites and were most abundant in the Triassic Period (252 million to 201 million years ago). (britannica.com)
  • Tree ferns have been found in the fossil record stretching back to the Jurassic and Triassic Periods-they've been around for more than 200 million years! (sandiegozoo.org)
  • The dinosaurs ruled Earth for some 100 million years before being ousted by mammals, which have ruled for the last 65 million years. (devtome.com)
  • In geologic time, a short period of time can be 10 million years. (devtome.com)
  • Diapsids ("two arches") are a group of tetrapod animals that appeared in the fossil record about 300 million years ago during the late Carboniferous period. (newworldencyclopedia.org)
  • 540 million years ago near the beginning of the Phanerozoic Eon (which lasts to this day and is split into the Cambrian, Palaeozoic, Mesozoic, and Cenozoic Periods) Most of the modern groups of animals were developing. (elasmodiver.com)
  • archosaur
  • However, features of the leg show that it was a lightly built archosaur, and is notable for its long slender legs and well-developed feet - features it shares with certain dinosaurs. (wikipedia.org)
  • 2017
  • This relationship was also recovered in the large analyses of early dinosaurs and other dinosauromorphs that were carried out by Baron, Norman and Barrett (2017). (wikipedia.org)
  • pterosaurs
  • The term dinosaur is sometimes used informally to describe other prehistoric reptiles, such as the pelycosaur Dimetrodon , the winged pterosaurs , and the aquatic ichthyosaurs , plesiosaurs , and mosasaurs , although technically none of these were dinosaurs. (newworldencyclopedia.org)
  • The first true mammals , themselves a specialized subgroup of Therapsids , also evolved during this period, as well as the first flying vertebrates, the pterosaurs , who like the dinosaurs were a specialized subgroup of archosaurs . (hitchhikersgui.de)
  • Formation
  • The holotype specimen UCMP 34498 was discovered in the Placerias quarry of the Bluewater Creek Formation of Arizona, from the Norian stage of the Late Triassic period. (wikipedia.org)
  • Sander (1992) referred additional material to Liliensternus, which was thought to have been collected in 1961 grey/green marlstone from the Löwenstein Formation in Aargau, Switzerland, which is considered to also be from the Norian stage of the Late Triassic period. (wikipedia.org)
  • Chindesaurus
  • Most phylogenetic analyses published through 2007 continued to find it to fall among the herrerasaurids, though a few studies cast doubt on this, including one in 2007 by Irmis, Nesbitt and colleagues which found Chindesaurus to be a probable basal saurischian dinosaur, and noted that it shares a wide range of characteristics with several lineages of basal saurischians, making any classification problematic. (wikipedia.org)
  • Rauhut (2003) noted that the medially expanded brevis shelf of Chindesaurus resembles that of crurotarsans, and not that of most dinosaurs which is usually laterally expanded. (wikipedia.org)
  • relatively
  • Eodromaeus was a relatively small dinosaur, with a total length of about 1.2 metres (3.9 ft) from nose to tail, and a weight of about 5 kilograms (11 lb). (wikipedia.org)
  • The relatively sudden demise of dinosaurs, after a long period of dominance, provided the foundation for events such as the rise of mammals and birds . (newworldencyclopedia.org)
  • Because a super-continental mass has less shoreline compared to one broken up, Triassic marine deposits are globally relatively rare, despite their prominence in Western Europe , where the Triassic was first studied. (hitchhikersgui.de)