I Know Dino Podcast Present Notes: Chasmosaurus (Episode 119)

I Know Dino Podcast Present Notes: Chasmosaurus (Episode 119)

Episode 119 is all about Chasmosaurus, a ceratopsid that lived within the Cretaceous in North America.

We additionally share listener Vince’s experiences at Uncover the Dinosaurs. Listed here are some pictures he was variety sufficient to share:

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On this episode, we focus on:


  • Scientists found a brand new Jurassic sauropodiform dinosaur, Xingxiulong chengi, present in China, in response to Nature
  • Auburn College is elevating cash to accommodate its solely dinosaur egg
  • The Backroom at the Discipline Museum in Chicago has a pop-up bar/museum exhibit beginning March twenty fifth 
  • A 12-year-old woman found an Edmontosaurus, and it has been nicknamed after her.
  • 20 animatronic dinosaurs are coming to Atlanta beginning March thirtieth
  • The Port Lympne Animal Reserve has added a Spinosaurus to its Dinosaur Forest
  • The College of Lisbon, Portugal launched a brand new web site, known as Paleowire to share information, occasions, job alternatives, and extra associated to paleontology
  • Sideshow Collectibles has a brand new Gastonia with an non-compulsory pterosaur for $349
  • Science has an amazing overview of early feathered dinosaurs and which may seemingly fly
  • A stage manufacturing used lights to simulate dinosaurs in New Orleans
  • New analysis demonstrates how sauropods’ vertebrae interlocked for added power
  • ScienceOpen.com has added papers from the Journal of Paleontological Strategies to their assortment of Open Entry papers
  • Dinosaur survival VR recreation Island 359 was demoed at GDC with full physique monitoring
  • Big dinosaur statues are on show at Singapore’s Gardens by the Bay
  • An incredible new interactive map is out there on paleobiodb.org the place you’ll be able to lookup native fossil finds
  • New analysis within the Journal of Theoretical Biology goals to reply why dinosaurs turned bipedal
  • New Mexico paleontologists have apparently found a detailed relative to Triceratops of their archives
  • After a $100 million renovation, the Witte Museum in San Antonio, Texas is again open with new high-tech dinosaur options

The dinosaur of the day: Chasmosaurus

  • Ceratopsid that lived within the Cretaceous in North America
  • Title means “opening lizard,” named that due to giant openings in its frill
  • Discovered within the Dinosaur Park Formation of the Dinosaur Provincial Park of Alberta, Canada
  • Two species: Chasmosaurus russelli and Chasmosaurus belli (kind species)
  • Chasmosaurus russelli is within the older decrease Dinosaur Park Formation and Chasmosaurus belli is within the center Dinosaur Park Formation
  • Lawrence Morris Lambe discovered the primary Chasmosaurus bones in 1897 (holotype, a part of a neck frill). He thought it could possibly be a brand new species however categorized it as an already recognized genus, Monoclonius. He known as it Monoclonis belli
  • Species identify belli is in honor of collector Walter Bell
  • In 1913, Charles Sterberg and his sons discovered a couple of full Monoclonis bellis skulls in Alberta (plus a largely full skeleton with pores and skin impressions), and in January 1914, Lambe named them Protorosaurus (as an ancestor to Torosaurus). However that identify was already used for a Permian reptile present in Germany, described in 1836 by Meyer. So Lambe renamed it Chasmosaurus in February 1914
  • Many skulls and fossils have been referred to Chasmosaurus, and lots of species named (although solely two are nonetheless legitimate)
  • Barnum Brown named Chasmosaurus kaiseni in 1933 (primarily based on a cranium that had lengthy forehead horns), which can be associated to Chasmosaurus canadensis, named in 1990 by Thomas Lehman.
  • Chasmosaurus canadensis was initially Monoclonis canadensis (Lambe had discovered it in 1902 and described it as Eoceratops canadensis in 1915). This Eoceratops and Chasmosaurus kaiseni have been considered Mojoceratops (Nicholas Longrich), however some scientists assume Mojoceratops is a synonym of Chasmosaurus russelli. In 2016, Campbell and others discovered that Eoceratops and Chasmosaurus kaiseni have been Chasmosaurus.
  • In 1933 Richard Swann Lull named a specimen Chasmosaurus breviorstris (had a brief snout), but it surely’s now seen as a junior synonym of Chasmosaurus belli.
  • Charles Mortram Sternberg named Chasmosaurus russelli in 1940 (species identify in honor of Loris Shano Russell).
  • In 1987 Gregory Paul renamed Pentaceratops sternbergii into Chasmosaurus, however nobody has actually accepted that
  • In 1989 Thomas Lehman described Chasmosaurus mariscalensis (present in Texas), however that’s been renamed Agujaceratops.
  • In 2000, George Olshevsy renamed Monoclonius recurvicornis (initially named in 1889) to Chasmosaurus recurvicornis, but it surely’s now a nomen dubium
  • In 2001, Chasmosaurus irvinensis was named, however has since been renamed Vagaceratops (in 2010)
  • Chasmosaurus was about 14-16 ft (4.3-4.8 m) lengthy and weighed 1.5-2 tons
  • Pores and skin impressions that Charles Sternberg discovered had giant scales in horizontal rows that have been amongst smaller scales (hexagonal or pentagonal), unclear about coloration
  • Had three horns, one on the nostril and two on the forehead
  • Horns have been brief, although Chasmosaurus russelli had longer horns (esp. brown horns), that have been extra curved backwards
  • Chasmosaurus belli had a v-shaped frill on the again (Chasmosaurus russelli is extra of a shallow u-shape)
  • Sides of the frill had osteoderms
  • Not clear what Chasmosaurus used its horns and frill for (horns have been brief and frill had such giant openings, so not nice for protection). Could have used its beak for protection as a substitute
  • Frill could have been to look extra vicious or for thermoregulation, or to draw mates (could have been brightly coloured)
  • Pores and skin lined the big openings so it might have appeared like a strong frill (due to tender tissue within the frill, it’s potential Chasmosaurus may have flushed and made its frill look extra vivid)
  • Had an extended snout and jaws than different ceratopsians it lived round, so could have been a pickier eater
  • Could have taken care of its younger
  • Phil Currie and a group discovered a juvenile Chasmosaurus belli in Alberta. Considered three years outdated and had comparable limb and frill proportions to an grownup, so most likely wasn’t that quick, and didn’t should be to maintain up with adults
  • Chasmosaurinae is a subfamily of ceratopsid
  • Chasmosaurinae had giant forehead horns and lengthy frills (in comparison with centrosaurines, one other subfamily of ceratopsid, which had brief forehead horns and shorter frills with lengthy spines popping out of the frills)
  • Chasmosaurine fossils have been present in western Canada, the western United States, and northern Mexico.

Enjoyable reality: The first dinosaurs have been carnivorous, later some dinosaurs have been omnivorous, and ultimately some dinosaurs have been herbivorous. Herbivores have been massively profitable by the mid-Jurassic.

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