Episode 410: A brand new tyrannosauroid from Idaho

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Episode 410: A brand new tyrannosauroid that was smaller than Moros, however larger than Suskityrannus; plus a brand new therizinosaur from Hokkaido; and a examine of the gentle pads on sauropod ft

Information:

  • A brand new unnamed tyrannosauroid was found in Idaho which was smaller than Moros, however larger than Suskityrannus supply
  • There’s a brand new therizinosaur named Paralitherizinosaurus that was present in Hokkaido, Japan supply
  • A brand new specimen of Yulong mini was discovered, which helps present how the dinosaur grew because it aged supply
  • Sauropods could have developed gentle tissue pads on their ft by the Late Triassic to Early Jurassic, and this may occasionally have been a key adaptation for them to evolve into giants supply
  • The Peabody Museum of Pure Historical past could have fossils of a brand new tyrannosaur species from the east coast of the U.S. supply
  • The Philip J. Currie Museum took guests on a rafting tour to search for fossils this summer time supply
  • We additionally put collectively an inventory of 9 locations to go dig for fossils supply

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The dinosaur of the day: Patagosaurus

  • Eusauropod dinosaur that lived within the Early–Center Jurassic in what’s now Patagonia, Argentina (Cañadón Asfalto Formation)
  • Regarded like different sauropods, with a protracted neck, small head, lengthy tail, and walked on 4 legs
  • Estimated to be about 54 ft (16.5 m) lengthy and weighed about 7.88 t (different estimates that it was about 46 ft or 14 m lengthy)
  • Fossils discovered within the Seventies
  • Holotype included an almost full skeleton (no cranium)
  • A number of specimens discovered, so we all know virtually the entire skeleton, together with the cranium
  • Cranium not well-known, principally the jaws are recognized
  • Lot of specimens discovered (initially 12, however now could solely be 11, based mostly on a redescription of Patagosaurus which discovered one specimen could also be a distinct taxa/dinosaur)
  • A minimum of one juvenile discovered
  • Femke M. Holwerda and others redescribed Patagosaurus in 2021
  • Herbivorous
  • Had a mixture of basal and derived sauropod traits (previous and new). One derived trait is the air-filled cavities in bones (pneumatization), which made the bones lighter
  • Had gracile (slender) forelimbs in comparison with later sauropods like Camarasaurus
  • Had tall neural spines
  • Had 5 sacral vertebrae (in between the hips)
  • Had “saddle” formed neural spines on the entrance tail vertebrae (anterior caudal vertebrae)
  • Had a comparatively brief, excessive decrease jaw (dentary)
  • Had a brief, excessive, broad snout
  • Enamel much like Camarasaurus (spoon-shaped)
  • Had a number of substitute enamel
  • Most likely changed enamel each 58 days
  • Juveniles seemed slightly totally different from adults. For instance, grownup femora (leg bone) had totally different proportions from juveniles
  • Additionally doable that juveniles had fewer enamel than adults
  • Lengthy neck could have helped with avoiding over-heating
  • Described by Jose Bonaparte in 1979
  • Kind species is Patagosaurus fariasi
  • Genus identify means “Patagonia lizard”
  • Genus identify refers to being a reptile present in Patagonia
  • Species identify in honor of Ricardo Farias, who owned the farmland the place the fossils had been discovered
  • Lived in a heat, humid local weather
  • A number of conifers and ferns
  • Different dinosaurs that lived across the identical time and place embrace Piatnitzkysaurus (megalosauroid), Condorraptor (megalosauroid), Volkheimeria (eusauropod)
  • Different animals that lived across the identical time and place included amphibians, turtles, mammals

Enjoyable Truth:

73% of the rock uncovered on Earth is sedimentary rock (one of the best for locating fossils) however sadly it doesn’t all protect fossils.

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