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Episode 410: A brand new tyrannosauroid from Idaho

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

    Information:

    • A brand new unnamed tyrannosauroid was found in Idaho which was smaller than Moros, however greater 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 mushy tissue pads on their toes by the Late Triassic to Early Jurassic, and this will likely 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 a listing 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)
    • Seemed like different sauropods, with an extended 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 a virtually full skeleton (no cranium)
    • A number of specimens discovered, so we all know nearly the entire skeleton, together with the cranium
    • Cranium not well-known, principally the jaws are identified
    • 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 special 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 just like Camarasaurus (spoon-shaped)
    • Had numerous substitute tooth
    • Most likely changed tooth each 58 days
    • Juveniles regarded somewhat totally different from adults. For instance, grownup femora (leg bone) had totally different proportions from juveniles
    • Additionally doable that juveniles had fewer tooth than adults
    • Lengthy neck could have helped with avoiding over-heating
    • Described by Jose Bonaparte in 1979
    • Sort 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 have been discovered
    • Lived in a heat, humid local weather
    • Numerous conifers and ferns
    • Different dinosaurs that lived across the identical time and place embody 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 (the most effective for locating fossils) however sadly it doesn’t all protect fossils.

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