Fossil taxa described in 1983

Adasaurus ( ; meaning "evil lizard") is a genus of dromaeosaurid dinosaur that lived in Asia during the Late Cretaceous period. The genus is known from two partial specimens found in the Nemegt Formation of Mongolia that were partially described in 1983 by the paleontologist Rinchen Barsbold.

Shunosaurus () is a genus of sauropod dinosaur from Late Jurassic (Oxfordian) beds in Sichuan Province in China, from 161 to 157 Million years ago. The name derives from "Shu", an ancient name for the Sichuan province.

Ultrasaurus (meaning "ultra lizard") is a genus of sauropod dinosaur discovered by Haang Mook Kim in South Korea. However, the name was first used unofficially (as a nomen nudum) in 1979 by Jim Jensen to describe a set of giant dinosaur bones he discovered in the United States. Because Kim published the name for his specimen before Jensen could do so officially, George Olshevsky renamed the specimen as Ultrasauros. Jensen's giant sauropod was later found to be a chimera, and the type remains are now assigned to Supersaurus.

Preondactylus is a genus of long-tailed pterosaurs from the Late Triassic (Carnian-Norian or late Norian, about 217-214 million years ago) that inhabited what is now Italy. It contains a single known species, Preondactylus buffarinii, which was discovered by Nando Buffarini in 1982 at the Forni Dolostone near Udine in the Preone valley of the Italian Alps.

Quaesitosaurus (meaning "extraordinary lizard") is a genus of nemegtosaurid sauropod containing only the type species, Q. orientalis, described in 1983. It lived from 72 to 71 million years ago during the Late Cretaceous epoch in the Barun Goyot Formation. With long, low and horse-like with frontally located peg-teeth, the skull of Quaesitosaurus is similar enough to the skull of Diplodocus and its kin to have prompted informed speculation that the missing body was built like those of diplodocids.

Chungkingosaurus (meaning "Chongqing Lizard") is a genus of stegosaurian dinosaur from the Late Jurassic Upper Shaximiao Formation in what is now China. The type species is Chungkingosaurus jiangbeiensis.

Zizhongosaurus (meaning "Zizhong lizard") is a genus of basal herbivorous sauropod dinosaur which lived in the Early Jurassic (Toarcian) Period of China. It was a large-bodied herbivore characterized by a long neck.

Xiaosaurus ("dawn lizard", ), is a genus of small herbivorous ornithischian dinosaur from the middle Jurassic (approximately 170.3 to 163.5 million years ago) of what is now the Sichuan Basin of China.

Enigmosaurus (meaning "enigma lizard" or "enigmatic lizard") is a genus of therizinosauroid that lived in Asia during the Late Cretaceous period. It was a medium-sized, ground-dwelling, bipedal herbivore that represents the third therizinosaur taxon from the Bayan Shireh Formation, although it is known from the lower part. The genus is monotypic, including only the type species E. mongoliensis, known from a well-preserved pelvis and other tentative body remains.

Klamelisaurus (meaning "Kelameili Mountains lizard") is a genus of herbivorous sauropod dinosaur from the Middle Jurassic Shishugou Formation of China. The type species is Klamelisaurus gobiensis, which was named by Zhao Xijin in 1993, based on a partial skeleton discovered in 1982 near the abandoned town of Jiangjunmiao. Zhao described Klamelisaurus as the only member of a new subfamily, Klamelisaurinae, among the now-defunct primitive sauropod order Bothrosauropodoidea. Since Zhao's description, Klamelisaurus received limited attention from researchers until Andrew Moore and colleagues redes

Angustinaripterus was a basal pterosaur, belonging to the breviquartossan family Rhamphorhynchidae (more specifically within the subfamily Rhamphorhynchinae) and discovered at Dashanpu near Zigong in the Sichuan province of China.

Kenyapotamus is an extinct genus of hippopotamid and possible ancestor of living hippopotamuses that lived roughly 16 million to 8 million years ago during the Miocene epoch. Its name reflects that its fossils were first found in modern-day Kenya.

Shamosaurus is an extinct genus of herbivorous basal ankylosaurid ankylosaur from Early Cretaceous (Aptian to Albian stage) deposits of Höövör, Mongolia.

Siderops (from the Greek sideros meaning “iron” and -ops meaning “face” ) is an extinct genus of chigutisaurid temnospondyl from Early Jurassic of Australia, containing the species S. kehli (named after the Kehl family of ‘Kolane’, Wandoan, Queensland where the fossil was found).

Gongbusaurus is a genus of ornithischian, perhaps ornithopod, dinosaur that lived between about 160 and 157 million years ago, in the Late Jurassic period. A small herbivore, it is very poorly known. Two species have been assigned to it, but as the original name is based on teeth, there is no concrete evidence to connect the two species. Its fossils have been found in China.

thumb|right|Restoration thumb|↑Pholidocercus hassiacus von Koenigswald and Storch 1983 with partially preserved fur and long, thick, scaled tail. Paratype of the publication

Diogenornis is an extinct genus of ratites, that lived from the Middle Paleocene to the Early Eocene (Riochican to Casamayoran in the SALMA classification). It was described in 1983 by Brazilian scientist Herculano Marcos Ferraz de Alvarenga based on fossils found in the Itaboraí Formation in southeastern Brazil. The type species is D. fragilis. It grew to about two thirds the size of the modern greater rhea, at about of height.

Toyotamaphimeia (named after Toyotama-hime) is a genus of extinct gavialid crocodylian which lived in Japan and Taiwan during the Middle Pleistocene. A specimen recovered in 1964 at Osaka University during the construction of a new science building has been dated to around 430–380 thousand years old based on the stratum in which it was found. Toyotamaphimeia was a fairly large crocodylian measuring approximately long. Two species are named, T. machikanensis from Japan and T. taiwanicus from Taiwan, both originally described as members of the genus Tomistoma.

Rusingoryx is a genus of extinct alcelaphine bovid artiodactyl closely related to the wildebeest. It contains only one species, R. atopocranion, that lived on the plains of Kenya during the Pleistocene. It was originally named as a species of Megalotragus.

Clamorosaurus is an extinct genus of temnospondyl amphibian. Fossils of Clamorosaurus have been found in the Inta Formation (Vorkuta series) in Russia. They are dated to about 272.5 million years ago, which was during the Ufimian interval of the Permian.

Balbaroo is an extinct genus of basal quadrupedal macropodiform marsupials that once lived in Australia during the Late Oligocene to the Middle Miocene. Known primarily from the Riversleigh World Heritage Area in Queensland, and the Camfield Beds of the Northern Territory, Balbaroo species are considered part of the family Balbaridae, which represents an early branch of kangaroo evolution. Unlike modern kangaroos, members of the Balbaroo genus were quadrupedal browsers, adapted to dense forest environments. Four species are currently recognised, B. camfieldensis, B. fangaroo, B. gregoriensis,

left|thumb|250x250px|The lamprey Hardistiella montanensis from the Carboniferous of Bear Gulch, Montana. Coll. Oilshale. Hardistiella montanensis is an extinct species of lamprey, found, dating from the Carboniferous period, at the Bear Gulch Limestone site in the U.S. state of Montana.

Woutersia was a Triassic genus of 'symmetrodont' and the only representative of the family Woutersiidae. It was originally classified as a kuehneotheriid, but it has been suggested that it may be related to Docodonta. Remains of W. mirabilis and W. butleri have been found in the Gres à Avicula contorta Formation at Saint-Nicolas-de-Port, France, while W. mirabilis has been found in Varangéville, France; remains have been dated to the Late Triassic, 205.6 to 201.6 Ma.

Siamogale is an extinct genus of giant otter from the Late Miocene to Early Pliocene of eastern Asia. Three species are currently known, S. thailandica and S. bounosa from Thailand and S. melilutra from China.

Judinornis is a genus of prehistoric flightless birds from the late Cretaceous period. The single known species is Judinornis nogontsavensis. Its fossils have been found in Nemegt Formation rocks of southern Mongolia, and though the age of these deposits is not fully resolved, Judinornis probably lived some 70 million years ago during the early Maastrichtian.

Isalorhynchus is an extinct genus of hyperodapedontine rhynchosaur from the late Triassic period (Carnian stage) of Toliara Province, southwestern Madagascar. It is known from the holotype MDE-R18, a nearly complete maxilla and from other specimens from the same locality, Malio River area. It was found in the Makay Formation (or Isalo II) of the Morondava Basin (or Isalo beds). It was first named by Eric Buffetaut in 1983 and the type species is Isalorhynchus genovefae. The majority of Isalorhynchus specimens are isolated jaw bones, but two nearly complete skeletons were found in 1998. Langer

Jozaria is an extinct genus of stem perissodactyl from the Early to Middle Eocene of the Kuldana Formation of Kohat, Pakistan. It and other anthracobunids were formerly classified with proboscideans.

Ebenaqua (from Latin ebenus ("black") + aqua ("water"), referencing the type locality) is an extinct genus of freshwater bobasatraniiform ray-finned fish that lived during the Lopingian (late Permian) epoch of Australia. It contains a single species, E. ritchiei, known from the Changhsingian-aged Rangal Coal Measures of what is now Blackwater, Queensland, Australia. thumb|left|Ebenaqua ritchiei fossil

Dinnetherium is an extinct genus of mammaliaforms from the Early Jurassic of Arizona. The type species, D. nezorum, was named in 1983. It was discovered in a Sinemurian layer of the Kayenta Formation, within the Gold Spring Quarry 1. The holotype is MNA V3221, which is a partial right mandible.

Ruthiromia is an extinct genus of varanopid synapsids from the Early Permian of the United States.

species of bird

Paraborhyaena is an extinct genus of Sparassodont, belonging to the family Proborhyaenidae. It was one of the large terrestrial predators that roamed South America during the Oligocene.

Angonisaurus is an extinct genus of kannemeyeriiform dicynodont from the Middle Triassic of Africa between 247 and 242 million years ago. Only one species, Angonisaurus cruickshanki has been assigned to this genus. This genus is thought to have been widely spread but rare in southern Gondwana. Though few in number, the fossil record of Angonisaurus cruickshanki contains multiple specimens giving it a measurable stratigraphic range. Sexually dimorphic features are found in Angonisaurus which include presence or absence of tusks and difference is size and robustness of the temporal arch and the

Eozygodon ( "dawn yoke-tooth") is an extinct genus of proboscidean in the family Mammutidae. It is a monotypic genus that contains the single species E. morotoensis, named in 1983. It is known from the Early Miocene of Africa (Kenya, Uganda, Namibia) and well as possibly the Middle Miocene of China. It is considered a primitive member of the family, retaining a long lower jaw (longirostrine) with lower tusks. The upper tusks are small, and are only slightly divergent from each other. The skull of the young adult (around 24-26 years old in African elephant tooth wear equivalent years) AM 02 fro