#telmatosaurus

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Island Weirdness #07 -- Telmatosaurus transsylvanicus

The hadrosauroid dinosaur Telmatosaurus was another resident of Hațeg Island, and while it wasn’t quite as small or specialized as its cousin Tethyshadros it was still dwarfed compared to their other relatives, only growing to about 5m long (16'4").

It was also the first dinosaur fossil found with a specific type of non-cancerous tumor known as an ameloblastoma on its lower jaw -- a surprising discovery, since ameloblastomas were previously only known to occur in mammals and a single snake species. Various other types of abnormal tissue growth have been identified in other hadrosauroids and hadrosaurs, however, suggesting that this particular lineage of dinosaurs may have been unusually susceptible to developing tumors.

Telmatosaurus

Telmatosaurus — архаїчний рід птахотазових динозаврів, що належав до родини гадрозаврових (Hadrosauridae). Вважається базальним родом цієї родини. Був виявлений у відкладах маастрихтського ярусу пізнього крейдяного періоду на території сучасної Румунії наприкінці XIX століття та описаний австро-угорським вченим бароном Ференцом Нопчею (Franz Nopcsa von Felső-Szilvás) у 1899 році. Відомий по одному виду, Telmatosaurus transsylvanicus.

Повний текст на сайті "Вимерлий світ":

By José Carlos Cortés on @ryuukibart

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Name: Telmatosaurus transsylvanicus

Name Meaning: Marsh Reptile

First Described: 1903

Described By: Nopcsa

Classification: Dinosauria, Ornithischia, Genasauria, Neornithischia, Cerapoda, Ornithopoda, Iguanodontia, Dryomorpha, Ankylopollexia, Styracosterna, Hadrosauriformes, Hadrosauroidea, Hadrosauridae

Telmatosaurus is a Hadrosaurid known from the Hațeg Basin in Romania, specifically the Sânpetru Formation from the Maastrichtian age of the Late Cretaceous, about 68 million years ago. As such, it’s a rare example of a hadrosaur from spaces outside of Asia and North America. It is known from a skull with lower jaws and vertebrae, as well as other fragmentary remains from other locations in Europe. It was about five meters long and it only weighed half a tonne, and given the fact that europe was a series of islands at the time this is a potential case of island dwarfism. Fossils of this animal are also known with benign tumors, which had only previously been found in modern reptiles. 

Source:

https://en.wikipedia.org/wiki/Telmatosaurus