I Know Dino Podcast Present Notes: Abelisaurus (Episode 79)


Episode 79 can also be about Abelisaurus, an apex predator from Argentina which will have hunted titanosaurs.

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On this episode, we talk about:

  • The dinosaur of the day: Abelisaurus
  • Identify means “Abel’s lizard”
  • Abelisaurid theropod that lived within the Late Cretaceous in what’s now Argentina
  • Named after Roberto Abel, who discovered the kind specimen, and was additionally the director of the Museum of Cipolletti in Argentina, the place the specimen is saved
  • Abel discovered the holotype in 1983; one fossil (partial cranium with no decrease jaws), however cranium is estimated to be 33 inches (85 cm) lengthy
  • Named by Jose Bonaparte and Fernando Emilio Novas in 1985
  • Sort species is Abelisaurus comahuensis
  • Species identify is in honor of the Comahue area of Argentina, the place the bones had been discovered
  • Paper Abelisaurus comahuensis, Carnosauria from the Late Cretaceous of Patagonia by Jose Bonaparte and Fernando Novas, revealed in 1985
  • Carnivore
  • Grew as much as 23-30 ft (7-9 m) lengthy, primarily based on one partial cranium
  • Gregory Paul estimated Abelisaurus to weigh 3 tons and be 33 ft (10 m) lengthy (in 2010)
  • In all probability an apex predator. Gregory Paul mentioned in 2010 Abelisaurus could have hunted titanosaurs
  • In all probability had quick entrance limbs and lengthy legs
  • Abelisaurus helped scientists higher perceive theropods from the southern hemisphere
  • Broad cranium within the again, so Bonaparte and Novas in contrast it to Tyrannosauridae (had extensive skulls), some variations although (not a part of Tyrannosaur household)
  • Assume Abelisaurus regarded like a smaller T-rex
  • Abelisaurids have quick heads
  • Cranium could have had a crest, primarily based on tough ridges on the snout
  • Had 4 small tooth within the premaxilla, and maxilla had 7-13 bigger tooth
  • Excessive eye sockets, and enormous fenestrae within the cranium above the jaw
  • Holes within the cranium make it lighter, which can have helped it steadiness its giant cranium (bigger holes than in Tyrannosauridae)
  • Created a brand new household, Abelisauridae
  • Initially thought it was Carnosauria, however then different abelisaurids had been discovered (Aucasaurus, Carnotaurus, Majungasaurus) that reveals they had been Neoceratosauria as a substitute of carnosaurs)
  • In 2009 Novas mentioned Aucasaurus garridoi could also be a junior synonym of Abelisaurus, however that hasn’t been accepted
  • Abelisauridae means “Abel’s lizards” and is a household of theropods
  • They lived within the Jurassic and Cretaceous in Gondwana, and have been present in Africa, South America, India, and Madagascar (could have additionally lived within the Late Jurassic in Portugal)
  • Carnivorous, with stocky hindlimbs, quick however tall skulls, and crests on the cranium
  • Most had been between 17-30 ft (5 to 9 m) lengthy
  • Only some superior abelisaurids have been discovered with full skeletons, so it’s not clear precisely how all of them regarded (many are identified from cranium bones)
  • Cranium is much like carcharodontosaurids, so the teams could have been associated
  • Enjoyable Reality: From the Coursera course on theropod dinosaurs: “as many as 42 main avian teams had already break up earlier than the tip of the Cretaceous.”



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