Episode 339: A big theropod that lived longer than Sue the T. rex


Episode 339 is all about Kryptops, an abelisaurid which can have had a keratin overlaying on its snout that might be helpful for scavenging.

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On this episode, we talk about:

Information:

  • A basal hadrosaurid, Yamatosaurus izanagii, was named from Awaji island in Japan supply
  • Dippy goes to Norwich Cathedral from July 13 to Oct 30 and is free to see supply
  • You possibly can go to over 1,300 dinosaur tracks in southeast Colorado in case you’re up for a tough 11 mile hike supply
  • A brand new Dinosaur theme park could also be coming to Upstate New York supply
  • Could 18 was (an) Worldwide Dinosaur Day with a number of museums holding particular occasions supply
  • Jurassic World: Camp Cretaceous was launched, we’ll be watching it for our subsequent few watch events supply

The dinosaur of the day: Kryptops

  • Abelisaurid that lived within the Early Cretaceous in what’s now Niger (Elrhaz Formation)
  • Seems to be like different abelisaurids, bipedal, giant head, quick arms
  • Estimated to be 19 to 23 ft (6 to 7 m) lengthy
  • Had tall vertebral spines
  • Carnivorous
  • Had a brief snout
  • Jaws lined in armor
  • Floor of the maxilla was closely textured (rugose)
  • Had pits and impressions of blood vessels on the maxilla, which reveals there was some type of overlaying connected to the face, possibly keratin (therefore the genus title)
  • Had small enamel
  • Maxilla estimated to be about 10 in (25 cm) lengthy
  • Had about 17 or 18 maxillary enamel
  • Most likely a scavenger
  • Steve Brusatte stated in Science Day by day: “A quick, two-legged hyena gnawing and pulling aside a carcass is how we would greatest think about Kryptops’ eating habits”
  • In a Reuters article, Paul Sereno stated: “The thought was that the animal was sticking its head into carcasses”
  • Sereno additionally stated: “We expect the face was lined with a bill-like materials. It might have regarded just about just like the invoice of a fowl”
  • Sort species is Kryptops palaios
  • Just one specimen discovered
  • Described in 2008 by Paul Sereno and Stephen Brusatte
  • Genus title means “lined face” in Greek
  • Species title “palaios” means “outdated” in Greek
  • Fossils present in 2000 on an expedition led by Paul Sereno
  • Partial skeleton discovered within the western Ténéré Desert
  • Holotype is an grownup and features a maxilla, vertebrae, ribs, pelvic girdle and sacrum
  • Oldest abelisaurid present in Africa, and the oldest indeniable abelisaurid on this planet
  • Sereno and Brusatte thought of Kryptops to be a basal abelisaurid
  • In 2021, Matthew Carrano and others discovered it to be a chimera, and steered that the postcranial fossils (significantly the pelvis and sacrum, which have been discovered articulated) have been discovered 15 m away from the maxilla, and that these postcranial fossils truly belonged to a carcharodontosaurid, reminiscent of Eocarcharia, which was discovered close by in the identical formation and named in the identical 2008 paper)
  • Kryptops, with Eocarcharia, assist present an earlier stage of abelisaurids and carcharodontosaurids in Gondwana
  • The spinosaurid Suchomimus, the sauropod Nigersaurus, the ornithopods Ouranosaurus and Lurdusaurus, and the crocodilian Sarcosuchus additionally lived across the identical time and place (a number of giant predators)

Enjoyable Truth:
T. rex is usually thought of the biggest, strongest, and longest lived theropod. However it simply misplaced the lifespan document to a carcharodontosaurid from Argentina.

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