Episode 336 is all about Chialingosaurus, a probably doubtful small stegosaur with lengthy entrance legs.
We additionally interview Scott Johnston, a preparator & technician quickly to be at Harvard. You possibly can take a look at his work and science communication on Instagram & TikTok @mrdrprofjohnston and on twitter @MrDrProfJohnstn
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On this episode, we focus on:
Information:
- A brand new report for essentially the most full sauropod west of the Andes was set by the brand new Chilean titanosaur Arackar supply
- In Redcliff, Alberta, Canada, a 7-year-old, discovered a nodosaur tooth whereas climbing supply
- The Las Vegas Pure Historical past Museum has a brand new life sized Dilophosaurus exhibit, created by paleoartist Brian Engh supply
- Wollaton Corridor Pure Historical past Museum in Nottingham, UK can have a brand new T. rex on show starting July 4th supply
- Panhandle Plains Historic Museum in Canyon, Texas has a brand new exhibit referred to as Dinosaur Discoveries: Historical Fossils, New Concepts supply
- A Sinclair dinosaur sculpture was stolen from in entrance of Mission Mountains Mercantile in Condon, Montana supply
- In Perth, Australia, a household hung out quarantining by constructing a “Bagasaurus” supply
- A person is promoting dinosaur and different prehistoric animal sculptures in Sweden supply
- The trailer for Jurassic World: Camp Cretaceous season 3 has been launched supply
The dinosaur of the day: Chialingosaurus
- Stegosaur that lived within the Late Jurassic in what’s now Sichuan Province, China (Higher Shaximiao Formation)
- Appears to be like like different stegosaurs, with the small, elongate head, and had plates on the entrance half of the physique (on the neck to the center of the physique) and spikes on the again half (center of the physique to the tail). Plates and spines regarded as in pairs (two rows)
- Much like Kentrosaurus
- Herbivorous, and doubtless ate ferns and cycads
- First stegosaur described from China
- One of many oldest identified stegosaurs
- Sort species is Chialingosaurus kuani
- Fossils present in 1957 by Yaowu Kuan and a group from the Geological Survey of the Bureau of Petroleum of Szechuan
- Described in 1959 by C. C. Younger (Zhongjian Yang)
- Genus title means “Chialing lizard”
- Genus title refers to one of many 4 primary rivers in Szechuan, the Chialingchiang
- Species title in honor of “Mr. Y. W. Kuan who was chargeable for this fascinating discovery”
- C.C. Younger described Chialingosaurus as just like Kentrosaurus, and stated Chialingosaurus had a slender skeleton and slender spines in comparison with Stegosaurus and Kentrosaurus, and comparatively lengthy entrance limbs
- Additionally stated it had a brief and big humerus, that appears extra lengthy stretched than Stegosaurus and Kentrosaurus
- Estimated Chialingosaurus to be 13 ft (4 m) lengthy
- Younger thought the holotype was an grownup, based mostly on the construction and measurement of the vertebrae and limbs
- Now that specimen is regarded as a juvenile or subadult, and Chialingosaurus might have been gracile as a result of it wasn’t absolutely grown
- Holotype, IVPP 2300, partial skeleton with six vertebrae, coracoids, each humeri, proper radius, three spines, a part of the appropriate ischium, left femur, metatarsal, elements of the limb bones (no cranium). The suitable facet of the specimen was higher preserved than the left facet
- Extra fossils and specimens discovered later. Second specimen discovered included a partial cranium and decrease jaws, vertebrae and limb parts, and 4 plates
- Shiwu Zhou thought the 2 specimens have been from the identical particular person (no overlapping materials)
- Third specimen discovered was a partial skeleton (no cranium)
- All specimens are actually regarded as juveniles or subadults
- Second species named in 1999, Chialingosaurus guangyuanensis, however no description and now seen as a nomen nudum
- Some debate over the validity of Chialingosaurus. Peter Galton stated in 1990 there was one trait that made it distinctive, the lesser trochanter (bony protuberance the place muscle tissue connect to the higher thigh bone) is triangular with a broad base
- In 2008 Susannah Maidment and others in a paper on the systematics and phylogeny of Stegosauria, thought of Chialingosaurus to be a nomen dubium (based mostly on Maidment and Wei’s 2006 assessment of stegosaurs from the Late Jurassic in China, the place they discovered the holotype of Chialingosaurus kuani to be a juvenile with no distinctive traits)
- The 2006 assessment got here to the conclusion that the stegosaur variety in China was just like Europe and North America from across the identical time (they discovered of seven stegosaurs named from China, solely 3 have been nonetheless legitimate), and since there weren’t as many various kinds of stegosaurs as beforehand thought, the declare that stegosaurs might have initially come from Asia “can’t now be upheld”
Enjoyable Truth:
The Andes weren’t round (or at the least weren’t as tall) when dinosaurs roamed South America.
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