Episode 322: Small Theropod Spectacular


Episode 322 is all about Hippodraco, the small “horse dragon” from Early Cretaceous Utah.

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On this episode, we focus on:

Information:

  • A brand new small abelisaurid, Spectrovenator, was discovered beneath the holotype of the sauropod Tapuiasaurus in Brazil supply
  • One other abelisaurid, Niebla, was present in Argentina with extra typical theropod jaw than later abelisaurids supply
  • A brand new small tyrannosauroid from China, Jinbeisaurus, helps that the primary large tyrannosaurs have been in North America supply
  • The brand new tiny compsognathid, Xunmenglong, makes Compsognathus appear like a large supply
  • There’s a push to make the (doubtful) dinosaur Suciasaurus rex the official state dinosaur of Washington supply
  • Leu Gardens in Orlando, Florida has a “Dinosaur Invasion” exhibit from now till April supply

The dinosaur of the day: Hippodraco

  • Iguanodontian ornithopod that lived within the Early Cretaceous in what’s now Utah, US (Yellow Cat Member of the Cedar Mountain Formation, northeast of Arches Nationwide Park)
  • Herbivorous
  • Small and gracile
  • Estimated to be about 15 ft (4.5 m) lengthy and weigh between 500 and 1,000 lb (227 to 454 kg)
  • Could have been greater, if the holotype is a juvenile
  • Holotype is presumably a juvenile, UMNH VP 20208, and features a practically full cranium, dentary enamel, vertebrae, proper humerus, proper scapula, left ischium, proper tibia, proper femur, and left metatarsals (had a big orbital within the cranium)
  • In all probability seemed like different iguanodonts, with a cumbersome physique
  • The foot bones (metatarsus) seemed much like Camptosaurus and Iguanodon
  • Had a singular shelf bone that prolonged alongside the decrease jaw, parallel to the tooth row units
  • A part of the cranium was crushed
  • Quite a lot of the bones have been crushed, and the braincase was poorly preserved. The dentary enamel have been in situ however not nicely preserved (cracking and fragmentation)
  • Nonetheless, the shelf bone on the decrease jaw appeared to be a particular function, not a pathology or deformation
  • Sort and solely species: Hippodraco scutodens
  • Genus title means “horse dragon”
  • Had an elongate head, like a horse
  • Species title means “protect tooth” and refers back to the shield-shaped dentary tooth crowns
  • Present in 2004 by Andrew Milner
  • Web site is named Andrew’s Web site
  • Named in 2010 by Andrew McDonald and others
  • Fragments of different specimens have been discovered on the web site, however not sufficient fossils to know in the event that they belonged to Hippodraco
  • A part of the sub group Styracosterna
  • Closest relative is Theiophytalia, an iguanodontian
  • Helped present that Early Cretaceous iguanodonts in North America have been extra primitive than iguanodonts in Europe and Asia that lived on the similar time
  • Lived round small lakes with gradual transferring rivers, in an space with a seasonally dry local weather
  • Different dinosaurs that lived on the similar time and place embrace Iguanacolossus (one other ornithopod), ornithopod Cedrorestes, sauropods Cedarosaurus and Moabosaurus, theropods Martharaptor and Nedcolbertia, nodosaurid Gastonia, and dromaeosaurid Utahraptor

Enjoyable Truth: José Bonaparte named/co-named at the very least 22 dinosaurs together with: Carnotaurus, Abelisaurus, Alvarezsaurus, Amargasaurus, Argentinosaurus, Saltasaurus, & Mussaurus. He additionally has two dinosaurs named after him: Bonapartesaurus & Bonapartenykus.

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