Episode 277 is all about Telmatosaurus, a small island dwelling hadrosaur from what’s now Romania.
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On this episode, we talk about:
On this week’s episode:
- We overview the 2014 film Dinosaur Island supply
- The webcomic Darbi “The misadventures of a blood-thirsty child T-Rex.” is free on-line—parental advisory applies. supply
- A cretaceous rib fossil could also be from the second largest dinosaur that lived in what’s now Japan supply
- Spinosaurus: Misplaced Big of the Cretaceous and Giants: African Dinosaurs could also be coming to a museum close to you quickly supply
The dinosaur of the day: Telmatosaurus
- Hadrosaurid that lived within the Late Cretaceous in what’s now Romania
- Fairly small (insular dwarf), about 16 ft (5 m) lengthy and weighed about half a tonne
- Herbivorous
- Maxillary enamel are excessive and slender
- Telmatosaurus lived on an island, one of many islands of the European Archipelago
- Hateg Island dinosaurs have been insular dwarfs (smaller than different dinosaurs as a result of they didn’t must eat as a lot, and will stay with restricted assets on the island)
- Helped that there weren’t actually any giant theropods on the island (predators included Balaur, about 6.5 ft or 2 m lengthy)
- Lived amongst mammals, pterosaurs, amphibians, crocodilians, fish
- Nopsca got here up with the concept of island dwarfism
- Greatest recognized European hadrosaurid
- Genus identify means “marsh lizard”
- First dinosaur named by Franz Nopcsa
- Native peasants introduced his sister, Ilona Nopcsa a dinosaur cranium in 1895. They discovered it in Transylvania, close to the Nopsca household Sâcel property
- Holotype is a cranium with decrease jaws, discovered within the Hateg Basin, about 68 million years previous
- Due to the cranium, Franz Nopcsa studied paleontology on the College of Vienna
- Franz named the cranium Limnosaurus transsylvanicus in 1899 (identify means “swamp lizard” and refers to the concept hadrosaurs lived in swamps)
- Later, Franz realized that Othniel Charles Marsh had named a crocodyliform Limnosaurus in 1872 (which was later reclassified as Pristichampsus), and in 1903 Franz renamed his dinosaur to Telmatosaurus
- Barnum Brown didn’t know concerning the new identify, and named the genus Hecatasaurus in 1910 (junior goal synonym)
- Franz referred Telmatosaurus transsylvanicus to Orthomerus in 1915 (Orthomerus transsylvanicus), as a 3rd Orthomerus species (genus identify means “straight femur”); this was based mostly on similarities within the femora
- Orthomerus is taken into account to be a nomen dubium as of 2019 (no distinctive traits based mostly on the lectotype, a proper thigh bone). Telmatosaurus was thought of its personal genus earlier (Nineteen Eighties and Nineties, David Weishampel and others within the 1990 ebook The Dinosauria)
- If Telmatosaurus and Orthomerus have been the identical, Telmatosaurus could be a junior synonym (named later). Geologist Eric Mulder forgot this rule and renamed Orthomerus dolloi as Telmatosaurus dolloi in 1984
- Skeletal parts have been discovered scattered and remoted, in addition to the holotype cranium and decrease jaws, and 4 articulated cervical vertebrae and three sacral vertebrae with two sacral ribs
- Hatchlings and embryos discovered with clutches of megaloolithid eggs within the Hateg Basin
- Telmatosaurus eggs might have been present in Livezi and Boi?a in Romania, within the Tara Hategului space (thought of to be seemingly Telmatosaurus by researchers from the College of Bucharest)
- In 2016, Mihai D. Dumbrava and others printed a couple of non-cancerous tumor, amelblastoma, on the decrease jaw of a juvenile Telmatosaurus (first discovery of a benign tumor in a dinosaur, earlier than that, had solely been recognized in fashionable mammals and reptiles)
- The staff used Micro-CT scanning on the jawbone
- The tumor on Telmatosaurus reveals the hadrosauroids have been extra susceptible to tumors than different dinosaurs (Telmatosaurus is essentially the most basal hadrosaurid and was remoted from sister taxon/different hadrosaurids for no less than 15 million years, most likely as a result of it lived on an island, and the tumor is early within the household’s evolution)
- Doable that the tumor led to the dinosaur’s early demise (might not have been painful, however based mostly on fashionable animals, predators typically go after the weak or injured). Exhausting to say although, since solely the 2 decrease jaws have been discovered
- Telmatosaurus fossils now on the Pure Historical past Museum in London
Enjoyable Reality:
Alberta has practically 10 instances as many dinosaur finds than all the opposite provinces and territories mixed. Based on paleobiodb.org
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