Taxonbars of monotypic genera missing species on Wikipedia

thumb|A male green iguana

Paraceratherium is an extinct genus of hornless rhinocerotoids belonging to the family Paraceratheriidae. It is one of the largest terrestrial mammals that has ever existed and lived from the Early to Late Oligocene epoch (34–23 million years ago). The first fossils were discovered in what is now Pakistan, and remains have been found across Eurasia between China and the Balkans. Paraceratherium means "near the hornless beast", in reference to Aceratherium, the genus in which the type species P. bugtiense was originally placed.

Giganotosaurus ( ) is a genus of large theropod dinosaur that lived in what is now Argentina, during the early Cenomanian age of the Late Cretaceous period, approximately 99.6 to 95 million years ago. The holotype specimen was discovered in the Candeleros Formation of Patagonia in 1993 and is almost 70% complete. The animal was named Giganotosaurus carolinii in 1995; the genus name translates to "giant southern lizard", and the specific name honors the discoverer, Ruben Carolini. A dentary bone, a tooth, and some tracks, discovered before the holotype, were later assigned to this animal. The g

The muriquis, also known as woolly spider monkeys, are the monkeys of the genus Brachyteles. They are closely related to both the spider monkeys and the woolly monkeys.

genus of mammals

genus of small tyrannosauroid dinosaur (fossil)

Hatzegopteryx ("Hațeg basin wing") is a genus of azhdarchid pterosaur found in the late Maastrichtian deposits of the Densuș-Ciula Formation, an outcropping in Transylvania, Romania. It is known only from the type species, Hatzegopteryx thambema, named by paleontologists Eric Buffetaut, Dan Grigorescu, and Zoltan Csiki in 2002 based on parts of the skull and humerus. Additional specimens, including a neck vertebra, were later placed in the genus, representing a range of sizes. The largest of these remains indicate it was among the biggest pterosaurs, with an estimated wingspan of .

Acanthostega, from Ancient Greek ἄκανθα (ákantha), meaning "spine", and στέγη (stégē), meaning "roof", is an extinct genus of stem-tetrapod, among the first vertebrate animals to have recognizable limbs. It appeared in the late Devonian period (Famennian age) about 365 million years ago, and was anatomically intermediate between lobe-finned fishes and those that were able to come onto land.

The true koels, Eudynamys, are a genus of cuckoos from Asia, Australia and the Pacific. They are large sexually dimorphic cuckoos that eat fruits and insects and have loud distinctive calls. They are brood parasites, laying their eggs in the nests of other species.

Rahonavis is a genus of bird-like theropod from the Late Cretaceous (Maastrichtian, from about 70 to 66 mya) of what is now northwestern Madagascar. It is known from a partial skeleton (UA 8656) found by Catherine Forster and colleagues in Maevarano Formation rocks at a quarry near Berivotra, Mahajanga Province. Rahonavis was a small predator, at about long and 0.45-2.27 kg (1-5 lbs), with the typical dromaesaurid-like raised sickle claw on the second toe. It was the first coelurosaur discovered in Africa, with Nqwebasaurus being the second.

Neotragus is a genus of dwarf antelope, native to Africa. The genus includes only a single species without any dispute, namely Neotragus pygmaeus. This species, the royal antelope, is the smallest antelope in the world, usually weighing around 5 to 7 pounds. They live in conditions that are warm and moist and are found in the tropical forests of Western Africa. The royal antelope's diet consists of high-nutrient food sources, such as leaves, flowers, plants, fruits, and the growing tips of shoots. Recent nucleic acid studies now suggest that the other two species formerly included in the genus

Homalocephale (from Greek ὁμαλός, homalos, "even", and κεφαλή, kephalē, "head") is a genus of pachycephalosaurid dinosaur that lived during the Late Cretaceous period of what is now the Nemegt Formation, Mongolia. The genus was described in 1974 by Halszka Osmólska and Teresa Maryańska, and consists of a single species, H. calathocercos. Though Homalocephale has been regarded as a synonym (and juvenile form) of Prenocephale, juvenile specimens of the latter indicate that they were distinct. Homalocephale was long and possibly an omnivore.

Abrosaurus (; 'delicate lizard' from the Greek '''''''''' meaning 'delicate' or 'dainty' and '''''' meaning 'lizard') is a genus of macronarian sauropod dinosaur from the Middle Jurassic Period of what is now Asia. It is one of many dinosaurs found at the Dashanpu Quarry in the Sichuan Province of China. Like most sauropods, Abrosaurus was a quadrupedal herbivore. It was rather small for a sauropod, measuring no more than long. Its head was boxy and topped with a tall, bony arch containing the nostrils. The generic name refers to the nature of the skull, with large openings separated by thin,

Coelurus is a genus of coelurosaurian dinosaur from the Late Jurassic period (mid-late Kimmeridgian faunal stage, 155–152 million years ago). The name means "hollow tail", referring to its hollow tail vertebrae (Greek κοῖλος, koilos = hollow + οὐρά, oura = tail). Although its name is linked to one of the main divisions of theropods (Coelurosauria), it has historically been poorly understood, and sometimes confused with its better-known contemporary Ornitholestes. Like many dinosaurs studied in the early years of paleontology, it has had a confusing taxonomic history, with several species

Prionosuchus is an extinct genus of large temnospondyl. A single species P. plummeri, is recognized from the Early Permian (some time between 299 and 272 million years ago). Its fossils have been found in what is now northeastern Brazil.

Citipati (; meaning "funeral pyre lord") is a genus of oviraptorid dinosaur that lived in Asia during the Late Cretaceous period, about 75 million to 71 million years ago. It is mainly known from the Ukhaa Tolgod locality at the Djadochta Formation, where the first remains were collected during the 1990s. The genus and type species Citipati osmolskae were named and described in 2001. A second species from the adjacent Zamyn Khondt locality may also exist. Citipati is one of the best-known oviraptorids thanks to a number of well-preserved specimens, including individuals found in brooding posit

Antarctopelta (; meaning 'Antarctic shield') is a genus of ankylosaurian dinosaur, a group of large, quadrupedal herbivores, that lived during the Maastrichtian stage of the Late Cretaceous period on what is now James Ross Island, Antarctica. Antarctopelta is the only known ankylosaur from Antarctica and a member of Parankylosauria. The only described specimen was found in 1986, the first dinosaur to be found on the continent, by Argentine geologists Eduardo Olivero and Robert Scasso. The fossils were later described in 2006 by paleontologists Leonardo Salgado and Zulma Gasparini, who named th

Eomaia ("dawn mother") is a genus of extinct fossil mammals containing the single species Eomaia scansoria, discovered in rocks that were found in the Yixian Formation, Liaoning Province, China, and dated to the Barremian Age of the Lower Cretaceous about . The single fossil specimen of this species is in length and virtually complete. An estimate of the body weight is . It is exceptionally well-preserved for a 125-million-year-old specimen. Although the fossil's skull is squashed flat, its teeth, tiny foot bones, cartilages and even its fur are visible.

Sarkidiornis is a genus within the family Anatidae comprising two species that inhabit aquatic environments in tropical and subtropical regions of South America, Africa and southern Asia. Sarkidiornis is sometimes considered a monotypic genus with its sole member the knob-billed duck (S. melanotos), a cosmopolitan species.

Conolophus is a genus of lizards, also known commonly as Galápagos land iguanas, in the family Iguanidae. The genus is endemic to the Galápagos Islands of Ecuador. The number of species of this variable genus has always been disputed; the most current taxonomic surveys suggest that three species exist.

Atlascopcosaurus () is a genus of herbivorous basal iguanodont dinosaur from the Early Cretaceous Eumeralla Formation of Australia.

Pterodaustro (from Greek , and Latin , ) is a genus of ctenochasmatid pterodactyloid pterosaur from South America. Its fossil remains dated back to the Early Cretaceous period, about 105 million years ago.

Scutosaurus ("shield lizard") is an extinct genus of pareiasaurian reptile. Fossils have been found in the Sokolki Assemblage Zone of the Malokinelskaya Formation in European Russia, close to the Ural Mountains, dating to the late Permian (Lopingian) between 259 and 252 million years ago. Its genus name refers to large plates of armor scattered across its body. With a body mass suggested to exceed , it was one of the largest reptiles of the Permian period.

The arapaima, pirarucu, or paiche is any large species of bonytongue in the genus Arapaima native to the Amazon and Essequibo basins of South America. Arapaima is the type genus of the subfamily Arapaiminae within the family Osteoglossidae. They are among the world's largest freshwater fish, reaching as much as in length. They are an important food fish. They have declined in the native range due to overfishing and habitat loss. In contrast, arapaima have been introduced to several tropical regions outside the native range (within South America and elsewhere), where they are sometimes consider

Salanoia is a genus of euplerid carnivoran with two currently described species found in Madagascar. They are mongoose-like, which is reflected in the older versions of their English names, for example brown-tailed mongoose which is now called brown-tailed vontsira. The name Salanoia is derived from salano, one of the vernacular names for Salanoia concolor.

The genus Dendragapus contains two closely related species of grouse that have often been treated as a single variable taxon (blue grouse). The two species are the dusky grouse (Dendragapus obscurus) and the sooty grouse (Dendragapus fuliginosus). In addition, the spruce grouse and Siberian grouse have been considered part of this genus.

Austroraptor ( ) is a genus of unenlagiine theropod dinosaur that lived during the Campanian and Maastrichtian ages of the Late Cretaceous period in what is now Argentina.

Alopochen is a genus of the bird family Anatidae, part of the subfamily Tadorninae along with the shelducks. It contains one extant species, the Egyptian goose (Alopochen aegyptiaca), and three which became extinct in the last 1,000 years or so. The Egyptian goose is native to mainland Africa, and the recently extinct species are from Madagascar and the Mascarene Islands.

Anurognathus (from the Greek ανоυρα γναθος "frog jaw") is an extinct genus of small pterosaur from the Late Jurassic Altmühltal Formation of Germany. Anurognathus was first named and described by Ludwig Döderlein in 1923. The type species is Anurognathus ammoni. The specific name ammoni honours the Bavarian geologist Ludwig von Ammon, from whose collection Döderlein had acquired the fossil in 1922.

Talarurus ( ; meaning "basket tail" or "wicker tail") is a genus of ankylosaurid dinosaur that lived in Asia during the Late Cretaceous period, about 96 million to 89 million years ago. The first remains of Talarurus were discovered in 1948 and later described by the Russian paleontologist Evgeny Maleev with the type species T. plicatospineus. It is known from multiple yet sparse specimens, making it one of the most well known ankylosaurines, along with Pinacosaurus. Elements from the specimens consists of various bones from the body; five skulls have been discovered and assigned to the genus,

Carcharodon (from Ancient Greek κάρχαρος (kárkharos), meaning "sharp, jagged", and ὀδούς (odoús), meaning "tooth", and thus, "sharp tooth/jagged tooth") is a genus of sharks within the family Lamnidae, colloquially called the "white sharks." The only extant member is the great white shark (Carcharodon carcharias). Extinct species include C. hubbelli and C. hastalis. The first appearance of the genus may have been as early as the Early Miocene or Late Oligocene. Carcharocles megalodon is still argued by some paleontologists (e.g. Michael D. Gottfried, Leonard Compagno, and Ewan Fordyce) to be a

Jobaria is a genus of sauropod dinosaur that lived in what is now Niger during the middle Jurassic Period, between 164 and 161 million years ago. Jobaria is currently the only known valid sauropod from the Tiouraren, where it was discovered in 1997.

genus of mammals

Rhabdomys is a largely Southern African genus of muroid rodents slightly larger than house mice. They are known variously as striped or four-striped mice or rats. Traditionally the genus has been seen as a single species, Rhabdomys pumilio, though modern evidence on the basis of karyotype and mtDNA analysis suggests that it comprises two or more species and subspecies. Dorsally Rhabdomys species display four characteristic black longitudinal stripes on a paler background.

Chenonetta is a genus of dabbling duck. One species is extinct, while the other is extant.

Yinlong (, meaning "hidden dragon") is a genus of basal ceratopsian dinosaur from the Late Jurassic Period of China. By far the earliest known ceratopsian, it was a small, primarily bipedal herbivore.

Aragosaurus (meaning "Aragon lizard") was a genus of sauropod dinosaur from the Early Cretaceous period of Galve, province of Teruel, in the autonomous territory of Aragón, Spain. It was deposited in the Villar del Arzobispo Formation.

Alwalkeria (; "for Alick Walker") is a historically problematic extinct genus of avemetatarsalian known from the Late Triassic Lower Maleri Formation of India. The genus contains a single species, Alwalkeria maleriensis. It was initially described in 1987 under the genus name , based on a partial skull, several vertebrae, and fragmentary hindlimb bones. As this name is preoccupied, the new genus Alwalkeria was proposed to replace it. Early research interpreted the material belonging to a 'podokesaurid' (coelophysoid) theropod, herrerasaur, or Eoraptor-like basal eusaurischian dinosaur. Subsequ

Peloneustes (meaning ) is a genus of pliosaurid plesiosaur from the Middle Jurassic of England. Its remains are known from the Peterborough Member of the Oxford Clay Formation, which is Callovian in age. It was originally described as a species of Plesiosaurus by palaeontologist Harry Govier Seeley in 1869, before being given its own genus by naturalist Richard Lydekker in 1889. While many species have been assigned to this genus, P. philarchus is currently the only one still considered valid, with the others moved to different genera, considered nomina dubia, or synonymised with P. philarchus

Bistahieversor (meaning "Bistahi destroyer"), also known as the "Bisti Beast", is a genus of basal eutyrannosaurian theropod dinosaur. The genus contains only a single known species, B. sealeyi, described in 2010, from the Late Cretaceous of New Mexico. The holotype and a juvenile were found in the Hunter Wash Member of the Kirtland Formation, while other specimens came from the underlying Fossil Forest member of the Fruitland Formation. This dates Bistahieversor approximately 75.5 to 74.5 million years ago during the Campanian age, found in sediments spanning a million years.

Dorygnathus ("spear jaw") was a genus of rhamphorhynchid pterosaur that lived in Europe during the Early Jurassic period, when shallow seas flooded much of the continent. It had a short wingspan around , and a relatively small triangular sternum, which is where its flight muscles attached. Its skull was long and its eye sockets were the largest opening therein. Large curved fangs that "intermeshed" when the jaws closed featured prominently at the front of the snout while smaller, straighter teeth lined the back.

Zhejiangopterus is a genus of azhdarchid pterosaur known from one species, which lived in China during the late Cretaceous Period. The genus was named in 1994 by Chinese paleontologists Cai Zhengquan and Wei Feng. The type species is Zhejiangopterus linhaiensis. The genus name refers to Zhejiang Province and a Latinized Greek pteron, "wing". The specific name refers to the city of Linhai.

The genus Eudyptula from Ancient Greek εὖ (eû), meaning "well", δύπτης (dúptes), meaning "diver", and Latin -ula, a diminutive suffix, contains a single species of penguin, found in southern Australia, Tasmania, and New Zealand (including the Chatham Islands). It is commonly known as the little penguin, little blue penguin, or, in Australia, fairy penguin. In the language of the Māori people of New Zealand, little penguins are known as .

Genyornis is an extinct genus of large, flightless bird that lived in Australia during the Pleistocene Epoch until around 40-50,000 years ago. Over two metres in height, they were likely herbivorous. It is the last known member of the extinct flightless bird family Dromornithidae which had been part of the fauna of the Australian continent for over 30 million years. They are not closely related to ratites such as emus, and they are thought to be a gigantic type of fowl, likely an early diverging group within the Anseriformes, which contains ducks and geese. Genyornis. and many other Australian

Marasuchus (meaning "Mara crocodile") is an early genus of dinosauriform archosaur, one of the closest relatives of dinosaurs. It is sometimes regarded as a junior synonym of Lagosuchus (which would make Marasuchus an invalid later name for Lagosuchus fossils). Both names have been applied to small bipedal dinosauriform fossils from the same time and place: the Late Triassic (early Carnian stage) of what is now La Rioja Province, Argentina. If valid, Marasuchus contains a single species, Marasuchus lilloensis.

Cheiromeles is a genus of bats in the family Molossidae, the free-tailed bats. The genus was erected and described by Thomas Horsfield, who developed the name from the Greek word cheir ("hand"), a reference to the hand-like hindfoot, which has a toe that flexes like an opposable thumb. These bats have mostly hairless bodies and fold their wings into pouches of skin along their bodies when at rest. These are among the largest insectivorous bats, weighing up to 135 grams.

The genus Dryolimnas comprises birds in the rail family. The Réunion rail, a member of this genus, became extinct in the 17th century. The white-throated rail of Aldabra is the last surviving flightless bird in the western Indian Ocean. They are mostly found on Malabar Island, but can also be found on Polymnieli Island and other islands.

Ornithosuchus (from , "bird" and , "crocodile") is an extinct genus of pseudosuchians from the Late Triassic (Carnian) Lossiemouth Sandstone of Scotland. It was originally thought to be the ancestor to the carnosaurian dinosaurs (such as Allosaurus), but it is now known to be more closely related to crocodilians than to dinosaurs.

Archboldomys, the shrew-mice, are a genus of rodents in the family Muridae. They are carnivores that feed on invertebrates much like shrews do. An apparently smaller relatives of the true shrew-rats Chrotomys and Rhynchomys, Archboldomys are somewhat convergent to the more distantly related Crunomys.

Tupinambis is a lizard genus which belongs to the family Teiidae and contains eight described species. These large lizards are commonly referred to as tegus. They are primarily found in South America, although T. teguixin also occurs in Panama.

Amyda is a genus of softshell turtles in the family Trionychidae. It contains two extant species: Amyda cartilaginea - Asiatic softshell turtle Amyda ornata - Southeast Asian softshell turtle

Yaverlandia (meaning "of Yaverland Point/Yaverland Battery") is an extinct genus of possible dinosaur known from two partial fossil skulls found in Lower Cretaceous strata of the Wessex Formation (Upper Silty Bed) in the Isle of Wight, England. When the first known specimen, MIWG 1530, was first described in 1930 by D. M. S. Watson, similarities were noted with the ornithopod genus Vectisaurus (now Mantellisaurus) and the theropod genus Troodon. In 1936, it was ultimately assigned to the former. It was recognised as a distinct genus in 1971 by Peter Galton, who re-examined the remains. Galton

Geranoaetus is a genus of birds of prey in the family Accipitridae. It contains three species. Geranoaetus are huge birds. Their wing span is about 70-80 in and their total length is 25-30 in.

Gecinulus is a genus of birds in the woodpecker family Picidae. The species are found in South and Southeast Asia.

extnct genus of dinosaurs

Bucanetes is a genus of passerine birds in the finch family. It contains two species:

Myllokunmingia is an extinct genus of primitive jawless fish that lived in during the Cambrian period, approximately 518 million years ago, in what is now the Yunnan Province of China. It was discovered alongside Haikouichthys, another genus of primitive jawless fish, in 1999 and is considered to be among the earliest known vertebrate animals in the fossil record. The holotype of the type species, Myllokunmingia fengjiaoa — and the only uncontroversial specimen thereof — was found in the Yuanshan member of the Qiongzhusi Formation in the Eoredlichia Zone near Haikou at Ercaicun, Kunming City,

Tropeognathus (meaning "keel jaw") is a genus of large pterosaurs from the late Early Cretaceous of South America. This genus is considered to be a member of the family Anhangueridae, but several studies have also recovered it within another family called Ornithocheiridae. Both of these families are diverse groups of pterosaurs known for their keel-tipped snouts and large size. With an estimated wingspan around , Tropeognathus is regarded as the largest pterosaur found in the Southern Hemisphere, only rivaled by the huge azhdarchids. The type and only species is Tropeognathus mesembrinus. Foss

genus of birds

Punomys is a genus of rodents in the family Cricetidae. It contains the following species: Eastern puna mouse (Punomys kofordi) Puna mouse (Punomys lemminus)