Telmatosaurus
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Telmatosaurus Temporal range: Late Cretaceous, 70–66 Ma |
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| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Superorder: | Dinosauria |
| Order: | Ornithischia |
| Family: | Hadrosauridae |
| Genus: |
Telmatosaurus Nopcsa, 1903 |
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Telmatosaurus (meaning "marsh lizard") is a genus of basal hadrosaurid dinosaur from the Late Cretaceous. It was a relatively small hadrosaur, approximately five meters (16 ft) long, found in what is now Romania.
The relatively small size of Telmatosaurus with a length of five metres and a weight of half a tonne, has been explained as an instance of insular dwarfism.
In 1895 some peasants presented Ilona Nopcsa, the daughter of their lord, with a dinosaur skull they had found at the estate Săcele in the district Hunedoara (then named Hunyad) in Transylvania. Ilona had an elder brother, Ferenc or Franz Nopcsa von Felső-Szilvás who was inspired by the find to become a paleontology student at the University of Vienna. In 1899 Nopcsa named the skull Limnosaurus transsylvanicus. The generic name was derived from Greek λιμνή, limné, "swamp", a reference to the presumed swamp-dwelling habits of hadrosaurs. The specific name referred to Transylvania. Later Nopcsa discovered that the name Limnosaurus had already been used by Othniel Charles Marsh in 1872 for a crocodilian (later reclassified as Pristichampsus), so in 1903 Nopcsa renamed the genus Telmatosaurus. Telma again means "marsh". In 1910 Barnum Brown, unaware of Nopcsa's replacement name, named the genus Hecatasaurus, but this is a junior objective synonym.
The holotype, BMNH B.3386, was found in the Haţeg Basin in a layer of the Sânpetru Formation dating from the Maastrichtian, about 68 million years old, at the time part of the Haţeg Island, one of the islands of the European Archipelago. It consists of a skull with lower jaws.
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