''Meroktenos'' is a genus of basal

sauropodomorph Sauropodomorpha ( ; from Greek, meaning "lizard-footed forms") is an extinct clade of long-necked, herbivorous, saurischian dinosaurs that includes the sauropods and their ancestral relatives. Sauropods generally grew to very large sizes, had lo ...

dinosaur Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic Geological period, period, between 243 and 233.23 million years ago (mya), although the exact origin and timing of the #Evolutio ...

that lived during the

Late Triassic The Late Triassic is the third and final epoch (geology), epoch of the Triassic geologic time scale, Period in the geologic time scale, spanning the time between annum, Ma and Ma (million years ago). It is preceded by the Middle Triassic Epoch a ...

period of what is now

Lesotho Lesotho, formally the Kingdom of Lesotho and formerly known as Basutoland, is a landlocked country in Southern Africa. Entirely surrounded by South Africa, it is the largest of only three sovereign enclave and exclave, enclaves in the world, t ...

Discovery and naming

In 1959,

François Ellenberger François () is a French masculine given name and surname, equivalent to the English name Francis. People with the given name * François Amoudruz (1926–2020), French resistance fighter * François-Marie Arouet (better known as Voltaire; 1 ...

, Paul Ellenberger, Jean Fabre and Leonard Ginsburg discovered the

type specimen In biology, a type is a particular wikt:en:specimen, specimen (or in some cases a group of specimens) of an organism to which the scientific name of that organism is formally associated. In other words, a type is an example that serves to ancho ...

, a thighbone or femur and other assorted bones, south of the village of Thabana Morena. In 1962 these were addressed in a thesis by D. Costedoat. The exact location the bones were recovered, is today unknown. In 1993,

François-Xavier Gauffre François-Xavier is a French masculine given name. Notable people with the name include: * François-Xavier Archambault (1841–1893), a lawyer and political figure in Quebec * François-Xavier Audouin (1765–1837), a French clergyman and politic ...

assigned the remains to a second species of ''Melanorosaurus'': ''Melanorosaurus thabanensis''. The description was provisional, and in 1997 the fossil was described in more detail in a publication by

Jacques van Heerden Jacques or Jacq are believed to originate from the Middle Ages in the historic northwest Brittany region in France, and have since spread around the world over the centuries. To date, there are over one hundred identified noble families related t ...

and

Peter Malcolm Galton Peter Malcolm Galton (born 14 March 1942 in London) is a British vertebrate paleontologist who has to date written or co-written about 190 papers in scientific journals or chapters in paleontology textbooks, especially on ornithischian and prosau ...

. The

specific name Specific name may refer to: * in Database management systems, a system-assigned name that is unique within a particular database In taxonomy, either of these two meanings, each with its own set of rules: * Specific name (botany), the two-part (bino ...

refers to the site Thabana-Morena in Lesotho. Gauffre assumed that the specimen had been found in the

Upper Elliot Formation The Elliot Formation is a geological formation and forms part of the Stormberg Group, the uppermost geological group that comprises the greater Karoo Supergroup. Outcrops of the Elliot Formation have been found in the northern Eastern Cape, south ...

dating from the

Hettangian The Hettangian is the earliest age and lowest stage of the Jurassic Period of the geologic timescale. It spans the time between 201.3 ± 0.2 Ma and 199.3 ± 0.3 Ma (million years ago). The Hettangian follows the Rhaetian (part of the Triass ...

Sinemurian In the geologic timescale, the Sinemurian is an age (geology), age and stage (stratigraphy), stage in the Early Jurassic, Early or Lower Jurassic epoch (geology), Epoch or series (stratigraphy), Series. It spans the time between 199.5 ±0.3 annu ...

and thus was about twenty million year younger than ''Melanorosaurus readi''. In 1996, he revised the date to the

Lower Elliot Formation The Elliot Formation is a geological formation and forms part of the Stormberg Group, the uppermost geological Stratigraphic unit, group that comprises the greater Karoo Supergroup. Outcrops of the Elliot Formation have been found in the northern ...

of the late Triassic in his non-published dissertation. He also referred the thighbone to a new genus and species '' Thotobolosaurus'' (now ''

Kholumolumo ''Kholumolumo'' (referring to a type of dragon the local Basuto associate with dinosaurs), formerly "Kholumolumosaurus" or "Thotobolosaurus", is an extinct genus of massopodan sauropodomorph dinosaur, which was closely related to '' Sarahsaurus' ...

''). This remained a non-valid ''nomen ex dissertatione'', as the name would never be published; furthermore the type material of this species does not coincide with that of ''M. thabanensis''.Gauffre F-X., 1996, ''Phylogénie des dinosaures prosauropodes et étude d’un prosauropode du Trias supérieur d’Afrique australe'' Dissertation, Muséum National d’Histoire Naturelle In 2016, ''M. thabanensis'' was appointed to the separate genus ''Meroktenos'' by

Claire Peyre de Fabrègues Clair or Claire may refer to: People and fictional characters * Claire (given name), including a list of people and fictional characters with the given name Clair or Claire * Clair (surname), a list of people with the surname Clair or Claire Pl ...

and

Ronan Allain {{Short pages monitor