Episode 101 is all about Barsboldia, a big hadrosaurid with tall neural spines.
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On this episode, we focus on:
- The dinosaur of the day: Barsboldia
- Sort species is Barsboldia sicinskii
- A big hadrosaurid dinosaur that lived within the Cretaceous and was present in Mongolia within the Nemegt Formation
- Title means “of Barsbold” and Barsboldia was named after a well-known Mongolian paleontologist Dr. Rinchen Barsbold
- Teresa Maryańska and Halszka Osmólska named Barsboldia in 1981, based mostly on a partial skeleton with 9 again vertebrae, 9 hip vertebrae, fifteen tail vertebrae, a partial pelvis, and a few ribs
- Maryańska and Osmólska stated Barsboldia was a lambeosaurine (hollow-crested hadrosaur) which was the primary from the Nemegt Formation (although they didn’t discover a cranium)
- Nevertheless it has lambeosaurine options, corresponding to a sacrum with a keel alongside the underside, and bones that look much like Hypacrosaurus
- Nevertheless, since there’s solely a partial skeleton and no cranium, some scientists take into account it a doubtful genus. And a 2011 research recommended it was truly a saurolophine
- 2011 research was by Albert Prieto-Márquez, known as A Reappraisal of Barsboldia sicinskii (Dinosauria: Hadrosauridae) from the Late Cretaceous of Mongolia, revealed within the Journal of Paleontology
- Is smart, as a result of by the point Barsboldia lived, saurolophines had principally changed lambeosaurines
- If a saurolophine, Barsboldia would have had a small stable bone crest or possibly even no bone crest on its head
- Although some research of Edmontosaurus, a relative, have discovered that some saurolophines did have tender tissue crests (hardly ever preserved)
- Had tall neural spines, particularly those over the hips (ideas within the first few tail vertebrae have been membership formed, presumably due to previous age)
- Brecht stated that he has a speculation about Barsboldia: “It had giant spines, similar to Acrocanthosaurus. Perhaps inside this tall spines, there fats reserves saved to outlive the desserts of Mongolia. Identical to camels as we speak.”
- Since Barsboldia is a hadrosaur it was each bipedal and quadrupedal, and would have eaten vegetation with a number of frequently changed tooth
- Not clear how giant it was
- Different dinosaurs on the similar time and place included Saurolophus (hadrosaur), Tarchia (ankylosaur), Nemegtosaurus (titanosaur) and predators corresponding to Alioramus and Tarbosaurus (tyrannosaurs)
- Two subfamilies of hadrosaurids: lambeosaurines (hole crests) and saurolophines with stable crests (pre-2010 most hadrosaurines categorized as saurolophines) (discuss extra about it on Episode 31: Corythosaurus)
- Earlier than the group was often called Hardosaurinae (hadrosaurs that for probably the most half didn’t have crests), however then the genus Hadrosaurus was discovered to be extra primitive so the subfamily was renamed Saurolophinae
- Saurolophinae dinosaurs typically both don’t have any crests or stable crests (the opposite subfamily is Lambosaurinae, which have hole crests)
- Enjoyable truth: Nyasasaurus at 243MYA is usually thought-about to be the earliest identified dinosaur. Sadly it’s a little sophisticated taking a look at specimens from that timeframe because you’re drawing a line in random evolutions between dinosaurs and dinosauromorphs (the bigger group of all animals resembling dinosaurs). So it has some traits which might be typical of dinosaurs and others that aren’t seen in different dinosaurs… The paper “The exact temporal calibration of dinosaur origins” by Claudia Marsicano and others estimates the origin of dinosaurs within the Carnian interval (the interval ~228–235MYA). That is based mostly on an evaluation of a basin in northwest Argentina which fortunately has the “earliest dinosaur fossils of all three main clades (Ornithischia, Sauropodomorpha, and Theropoda)” Relying on how selective you need to be, the earliest identified dinosaur may be Herrerasaurus, Eoraptor, Saturnalia, Alwalkeria, Staurikosaurus, or others that are all roughly 220-230Ma (~10Ma youthful than Nyasasaurus). It’s additionally vital to notice that we virtually definitely by no means discover THE earliest dinosaur, since that will be a particular particular person and the fossil file isn’t practically full sufficient to get that type of decision.
This episode was dropped at you by:
The Royal Tyrrell Museum. The Royal Tyrrell Museum is positioned in southern Alberta, Canada. One of many prime paleontological analysis institutes on the earth, all the museum is devoted to the science of paleontology. It’s undoubtedly a should see for each dinosaur fanatic. Extra info might be discovered at tyrrellmuseum.com.