| Orosaurus Temporal range: Late Triassic, | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Dinosauria |
| Clade: | Saurischia |
| Clade: | † Sauropodomorpha |
| Genus: | † Orosaurus Huxley, 1867 |
| Species: | †O. capensis |
| Binomial name | |
| †Orosaurus capensis Huxley, 1867 | |
| Synonyms | |
| |
Orosaurus ("mountain lizard") is a dubious genus of basal sauropodomorph from the Late Triassic of South Africa.
The holotype was discovered in 1863. [1] It was first described by Thomas Henry Huxley in 1867 based on holotype NHMUK R1626, a proximal end of a left tibia (misidentified as a distal femur). [2] However, Huxley declined to provide a species name. In his 1889 catalogue of fossil reptiles in the Natural History Museum in London, Richard Lydekker mistakenly considered Orosaurus preoccupied by the lizard genus Oreosaurus and coined Orinosaurus capensis for NHMUK R1626. Along with Euskelosaurus , Lydekker considered Orosaurus (Orinosaurus of his usage) to be an ornithischian dinosaur. [3]
von Huene (1940) treated Orosaurus as a species of Euskelosaurus, as E. capensis. [4] van Heerden (1979) considered Orosaurus a synonym of Euskelosaurus. [5] However, Gauffre (1996) referred Orosaurus to his nomen ex dissertationae Kholumolumo along with Meroktenos and Plateosauravus . [6] Meanwhile, Orosaurus was listed as a nomen dubium in the 2nd edition of The Dinosauria . [7]
Megalosaurus is an extinct genus of large carnivorous theropod dinosaurs of the Middle Jurassic period of Southern England. Although fossils from other areas have been assigned to the genus, the only certain remains of Megalosaurus come from Oxfordshire and date to the late Middle Jurassic.
Thecodontosaurus is a genus of herbivorous basal sauropodomorph dinosaur that lived during the late Triassic period.
Titanosaurus is a dubious genus of sauropod dinosaurs, first described by Richard Lydekker in 1877. It is known from the Maastrichtian Lameta Formation of India and possibly also the Maastrichtian Marília Formation of Brazil.
Pelorosaurus is a genus of titanosauriform sauropod dinosaur. Remains referred to Pelorosaurus date from the Early Cretaceous period, about 140-125 million years ago, and have been found in England and Portugal. Thomas Holtz estimated its length at 24 meters.
Cetiosaurus meaning 'whale lizard', from the Greek keteios/κήτειος meaning 'sea monster' and sauros/σαυρος meaning 'lizard', is a genus of herbivorous sauropod dinosaur from the Middle Jurassic Period, living about 168 million years ago in what is now Europe.
Valdoraptor is a genus of theropod dinosaur from the Early Cretaceous. Its fossils were found in England. It is known only from bones of the feet. The holotype, BMNH R2559, was found near Cuckfield in layers of the Tunbridge Wells Sand Formation dating from the late Valanginian. The specimen is damaged lacking parts of the upper and lower ends. It has a conserved length of 215 millimetres (8.5 in) and an estimated length of 240 millimetres (9.4 in). This genus is paleontologically significant for being the first ornithomimosaur specimen known from England and represents the earliest record of ornithomimosaurs.
Sarcosaurus is a genus of basal neotheropod dinosaur, roughly 3.5 metres (11 ft) long. It lived during the Hettangian-Sinemurian stages of the Early Jurassic, about 199-194 million years ago. Sarcosaurus is one of the earliest known Jurassic theropods, and one of only a handful of theropod genera from this time period. Along with Dracoraptor hanigani it is one of the two described neotheropods from the lowermost Jurassic of the United Kingdom.
Euskelosaurus is a plateosaurid sauropodomorph dinosaur from the Late Triassic of South Africa and Lesotho. Fossils have only been recovered from the lower Elliot Formation in South Africa and Lesotho, and in one locality in Zimbabwe.
Eucnemesaurus is a basal sauropodomorph dinosaur genus usually considered to be a synonym of Euskelosaurus. Recent study by Yates (2006), however, indicates that it is valid and the same animal as putative "giant herrerasaurid" Aliwalia.
Gryponyx is an extinct genus of massopod sauropodomorph known from southern Free State, central South Africa.
Ornithopsis was a medium-sized Early Cretaceous sauropod dinosaur, from England. The type species, which is the only species seen as valid today, is O. hulkei.
Plateosauravus is a basal plateosaurian of uncertain affinities from the Late Triassic Elliot Formation of South Africa.
Teratosaurus is a genus of rauisuchians known from the Triassic Stubensandstein of Germany. It is estimated to be 6.2 meters (20.3 ft) long.
Palaeosaurus is a genus of indeterminate archosaur known from two teeth found in either the Magnesian Conglomerate or the Avon Fissure Fill of Clifton, Bristol, England. It has had a convoluted taxonomic history.
Nyasasaurus is an extinct genus of avemetatarsalian reptile from the Middle Triassic Manda Formation of Tanzania that may be the earliest known dinosaur. The type species Nyasasaurus parringtoni was first described in 1956 in the doctoral thesis of English paleontologist Alan J. Charig, but it was not formally described until 2013.
The Stormberg Group is one of the four geological groups that comprises the Karoo Supergroup in South Africa. It is the uppermost geological group representing the final phase of preserved sedimentation of the Karoo Basin. The Stormberg Group rocks are considered to range between Lower Triassic (Olenekian) to Lower Jurassic (Pliensbachian) in age. These estimates are based on means of geological dating including stratigraphic position, lithostratigraphic and biostratigraphic correlations, and palynological analyses.
Haestasaurus is a genus of herbivorous sauropod dinosaur, belonging to the Macronaria, that during the Early Cretaceous lived in the area of present-day England. The only species is Haestasaurus becklesii.
Meroktenos is a genus of basal sauropodomorph dinosaur that lived during the Late Triassic period of what is now Lesotho.
"Megalosaurus" dunkeri is a dubious species of theropod dinosaur, known only from a single tooth.
Kholumolumo, formerly "Kholumolumosaurus" or "Thotobolosaurus", is an extinct genus of massopodan sauropodomorph dinosaur, which was closely related to Sarahsaurus, from the lower Elliot Formation of Maphutseng, Lesotho. The type species, Kholumolumo ellenbergerorum was formally described in 2020.
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