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1872 In Paleontology
Non-avian dinosaurs {, border="0" style="background:transparent;" style="width: 100%; , - , style="border:0px" valign="top", {, class="wikitable sortable" align="center" width="100%" , - ! Name ! Status ! Authors ! Location ! Notes , - , '' Agathaumas'' , ''Nomen dubium'' , style="border-right:0px" valign="top", Edward Drinker Cope , * () , Possible subjective synonym of '' Nedoceratops'', '' Torosaurus'', or '' Triceratops''. , - , '' Colonosaurus'' , Misidentification. , style="border-right:0px" valign="top", Othniel Charles Marsh , , Misidentified ichthyornithid bird, probably synonymous with '' Ichthyornis'' itself. , - , '' Eucamerotus'' , ''Nomen dubium'' , style="border-right:0px" valign="top", Hulke , * {{Flag, UK , , - , '' Tylosteus'' , ''Nomen oblitum'' , style="border-right:0px" valign="top", Joseph Leidy , , Subjective senior synonym of ''Pachycephalosaurus ''Pachycephalosaurus'' (; meaning "thick-headed lizard", from Greek ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agathaumas
''Agathaumas'' (; "great wonder") is a dubious genus of a large ceratopsid dinosaur that lived in Wyoming during the Late Cretaceous (late Maastrichtian stage, 66 million years ago). The name comes from grc, αγαν - 'much' and - 'wonder'. It is estimated to have been long and weighed , and was seen as the largest land animal known at the time of its discovery. It was the first ceratopsian known to science from more than teeth, though relatively little is known about it. The original specimen consisted only of the animal's hip bones, hip vertebrae and ribs, and because these bones vary little between ceratopsid species, it is usually considered a ''nomen dubium''. It is provisionally considered a synonym of ''Triceratops'', but is difficult to compare to that genus because it is only known from postcranial remains. History The holotype remains of ''Agathaumas'' were first found in 1872 in southwestern Wyoming. They were discovered by Fielding Bradford Meek and Henry Mart ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nomen Dubium
In binomial nomenclature, a ''nomen dubium'' (Latin for "doubtful name", plural ''nomina dubia'') is a scientific name that is of unknown or doubtful application. Zoology In case of a ''nomen dubium'' it may be impossible to determine whether a specimen belongs to that group or not. This may happen if the original type series (i. e. holotype, isotype, syntype or paratype) is lost or destroyed. The zoological and botanical codes allow for a new type specimen, or neotype, to be chosen in this case. A name may also be considered a ''nomen dubium'' if its name-bearing type is fragmentary or lacking important diagnostic features (this is often the case for species known only as fossils). To preserve stability of names, the ''International Code of Zoological Nomenclature'' allows a new type specimen, or neotype, to be chosen for a ''nomen dubium'' in this case. 75.5. Replacement of unidentifiable name-bearing type by a neotype. When an author considers that the taxonomic identity ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edward Drinker Cope
Edward Drinker Cope (July 28, 1840 – April 12, 1897) was an American zoologist, paleontologist, comparative anatomist, herpetologist, and ichthyologist. Born to a wealthy Quaker family, Cope distinguished himself as a child prodigy interested in science; he published his first scientific paper at the age of 19. Though his father tried to raise Cope as a gentleman farmer, he eventually acquiesced to his son's scientific aspirations. Cope married his cousin and had one child; the family moved from Philadelphia to Haddonfield, New Jersey, although Cope would maintain a residence and museum in Philadelphia in his later years. Cope had little formal scientific training, and he eschewed a teaching position for field work. He made regular trips to the American West, prospecting in the 1870s and 1880s, often as a member of United States Geological Survey teams. A personal feud between Cope and paleontologist Othniel Charles Marsh led to a period of intense fossil-finding competit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nedoceratops
''Nedoceratops'' (meaning "insufficient horned face") is a controversial genus of Ceratopsidae, ceratopsid dinosaur from the Late Cretaceous geologic period, period Lance Formation of North America. It is known only from a single skull discovered in Wyoming. Its status is the subject of ongoing debate among paleontologists: some authors consider ''Nedoceratops'' a valid, distinct taxon, while others consider it to be an unusual specimen of ''Triceratops''. History of discovery The nearly complete skull USNM 2412, the holotype specimen of ''Nedoceratops hatcheri'', was found in eastern Wyoming in 1891, in Niobrara County near Lightning Creek, Wyoming, Lightning Creek. The paper that described ''Nedoceratops'' was originally part of O. C. Marsh's Masterpiece, magnum opus, his Ceratopsidae monograph. Unfortunately, Marsh died (1899) before the work was completed, and John Bell Hatcher endeavored to complete the ''Triceratops'' section. However, he died of typhus in 1904 at the age ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Torosaurus
''Torosaurus'' ("perforated lizard", in reference to the large openings in its frill) is a genus of herbivorous ceratopsid dinosaur that lived during the late Maastrichtian stage of the Cretaceous period, between 68 and 66 million years ago, though it is possible that the species range might extend to as far as 69 million years ago.*Hicks, J.F., Johnson, K.R., Obradovich, J. D., Miggins, D.P., and Tauxe, L. 2003. Magnetostratigraphyof Upper Cretaceous (Maastrichtian) to lower Eocene strata of the Denver Basin, Colorado. In K.R. Johnson, R.G. Raynolds and M.L. Reynolds (eds), Paleontology and Stratigraphy of Laramide Strata in the Denver Basin, Pt. II., Rocky Mountain Geology 38: 1-27. Fossils have been discovered across the Western Interior of North America, from Saskatchewan to southern Texas. ''Torosaurus'' possessed one of the largest skulls of any known land animal, with the frilled skull reaching in length. ''Torosaurus'' is thought to have been the same size as the contemp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triceratops
''Triceratops'' ( ; ) is a genus of herbivorous chasmosaurine ceratopsid dinosaur that first appeared during the late Maastrichtian stage of the Late Cretaceous period, about 68 million years ago in what is now North America. It is one of the last-known non-avian dinosaur genera, and became extinct in the Cretaceous–Paleogene extinction event 66 million years ago. The name ''Triceratops'', which literally means 'three-horned face', is derived from the Greek words () meaning 'three', () meaning 'horn', and () meaning 'face'. Bearing a large bony frill, three horns on the skull, and a large four-legged body, exhibiting convergent evolution with rhinoceroses and bovines, ''Triceratops'' is one of the most recognizable of all dinosaurs and the most well-known ceratopsid. It was also one of the largest, up to long and in body mass. It shared the landscape with and was most likely preyed upon by '' Tyrannosaurus'', though it is less certain that two adults ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Colonosaurus
''Ichthyornis'' (meaning "fish bird", after its fish-like vertebrae) is an extinct genus of toothy seabird-like ornithuran from the late Cretaceous period of North America. Its fossil remains are known from the chalks of Alberta, Alabama, Kansas (Greenhorn Limestone), New Mexico, Saskatchewan, and Texas, in strata that were laid down in the Western Interior Seaway during the Turonian through Campanian ages, about 95–83.5 million years ago. ''Ichthyornis'' is a common component of the Niobrara Formation fauna, and numerous specimens have been found. ''Ichthyornis'' has been historically important in shedding light on bird evolution. It was the first known prehistoric bird relative preserved with teeth, and Charles Darwin noted its significance during the early years of the theory of evolution. ''Ichthyornis'' remains important today as it is one of the few Mesozoic era ornithurans known from more than a few specimens ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Othniel Charles Marsh
Othniel Charles Marsh (October 29, 1831 – March 18, 1899) was an American professor of Paleontology in Yale College and President of the National Academy of Sciences. He was one of the preeminent scientists in the field of paleontology. Among his legacies are the discovery or description of dozens of new species and theories on the origins of birds. Born into a modest family, Marsh was able to afford higher education thanks to the generosity of his wealthy uncle George Peabody. After graduating from Yale College in 1860 he travelled the world, studying anatomy, mineralogy and geology. He obtained a teaching position at Yale upon his return. From the 1870s to 1890s, he competed with rival paleontologist Edward Drinker Cope in a period of frenzied Western American expeditions known as the Bone Wars. Marsh's greatest legacy is the collection of Mesozoic reptiles, Cretaceous birds, and Mesozoic and Tertiary mammals that now constitute the backbone of the collections of Yale's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ichthyornis
''Ichthyornis'' (meaning "fish bird", after its fish-like vertebrae) is an extinct genus of toothy seabird-like ornithuran from the late Cretaceous period of North America. Its fossil remains are known from the chalks of Alberta, Alabama, Kansas (Greenhorn Limestone), New Mexico, Saskatchewan, and Texas, in strata that were laid down in the Western Interior Seaway during the Turonian through Campanian ages, about 95–83.5 million years ago. ''Ichthyornis'' is a common component of the Niobrara Formation fauna, and numerous specimens have been found. ''Ichthyornis'' has been historically important in shedding light on bird evolution. It was the first known prehistoric bird relative preserved with teeth, and Charles Darwin noted its significance during the early years of the theory of evolution. ''Ichthyornis'' remains important today as it is one of the few Mesozoic era ornithurans known from more than a few specimens ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eucamerotus
''Eucamerotus'' (meaning "well-chambered", in reference to the hollows of the vertebrae) was a genus of sauropod dinosaur from the Barremian-age Lower Cretaceous Wessex Formation ( Wealden) of the Isle of Wight, England. History and taxonomy John Hulke erected the genus in 1872 for " R.2522", a neural arch found by William Fox near Brighstone Bay, but provided no species name. He considered the '' Ornithopsis hulkei'' lectotype referable to the genus.Naish, D., and Martill, D.M. (2001). Saurischian dinosaurs 1: Sauropods. In: Martill, D.M., and Naish, D. (eds.). ''Dinosaurs of the Isle of Wight''. The Palaeontological Association:London 185-241. He later referred NMHUK R.2522 to '' Ornithopsis'', synonymizing ''Eucamerotus'' with Seeley's name based on the discovery of additional vertebrae from the Isle of Wight. Later authors treated ''Eucamerotus'' as a synonym of ''Pelorosaurus''. von Huene, F. (1909). Skizze zu einer Systematik und Stammesgeschichte der Dinosaurier. ''Cen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tylosteus
''Pachycephalosaurus'' (; meaning "thick-headed lizard", from Greek ''pachys-/'' "thick", ''kephale/'' "head" and ''sauros/'' "lizard") is a genus of pachycephalosaurid dinosaurs. The type species, ''P. wyomingensis'', is the only known species, but some researchers argue that there might be a second species, ''P. spinifer''. It lived during the Late Cretaceous Period ( Maastrichtian stage) of what is now North America. Remains have been excavated in Montana, South Dakota, Wyoming, and Alberta. It was a herbivorous creature which is primarily known from a single skull and a few extremely thick skull roofs, at 22 centimetres (9 inches) thick. More complete fossils have been found in recent years. ''Pachycephalosaurus'' was among the last non-avian dinosaurs before the Cretaceous–Paleogene extinction event. The genus ''Tylosteus'' has been synonymized with ''Pachycephalosaurus'', as have the genera ''Stygimoloch'' and ''Dracorex'' in recent studies. Like other pac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nomen Oblitum
In zoological nomenclature, a ''nomen oblitum'' (plural: ''nomina oblita''; Latin for "forgotten name") is a disused scientific name which has been declared to be obsolete (figuratively 'forgotten') in favour of another 'protected' name. In its present meaning, the ''nomen oblitum'' came into being with the fourth, 1999, edition of the ''International Code of Zoological Nomenclature''. After 1 January 2000, a scientific name may be formally declared to be a ''nomen oblitum'' when it has been shown not to have been used as a valid name within the scientific community since 1899, and when it is either a senior synonym (there is also a more recent name which applies to the same taxon, and which is in common use) or a homonym (it is spelled the same as another name, which is in common use), and when the preferred junior synonym or homonym has been shown to be in wide use in 50 or more publications in the past few decades. Once a name has formally been declared to be a ''nomen oblitum'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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