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Episode 423: Ankylosaur and sauropod tail weapons plus a paleo controversy


    Episode 423: Ankylosaur and sauropod tail weapons plus a paleo controversy. Most pace of sauropod tails, ankylosaurs clubbing one another, a paper on the Tanis web site might embrace faux knowledge, a brand new ornithopod, and the way AI is being utilized in paleontology


    • One of many papers concerning the Tanis web site has been accused of getting faux knowledge supply
    • There’s a brand new dwarf rhabdodontid dinosaur, Transylvanosaurus platycephalus supply
    • Ankylosaurs most likely developed their tails for preventing one another, not for defending towards predators supply
    • Diplodocid tails couldn’t break the pace of sound, in response to a brand new mannequin supply
    • Synthetic Intelligence helped resolve the thriller of dinosaur tracks in Queensland, Australia supply


    The dinosaur of the day: Abrosaurus

    • Macronarian sauropod that lived within the Center Jurassic in what’s now Sichuan Province, China (Decrease Shaximiao Formation)
    • In all probability seemed like different sauropods, although perhaps a bit extra stout, in response to paleoart
    • Had a protracted neck, lengthy tail, walked on 4 legs
    • Solely the cranium has been described
    • Had a extra boxy head, with a tall bony arch on prime (in entrance of the eyes) the place the nostrils had been
    • Estimated to be about 30 ft (9.1 m) lengthy
    • Sort species is Abrosaurus dongpoi
    • Genus title means “delicate lizard”
    • Genus title refers back to the cranium, that had massive openings separated by skinny bones
    • Species title is in honor of the poet Su Shi, a.ok.a. Su Dongpo, who was born in Sichuan and lived from 1037-1101
    • Fossils found in 1984 and first described in 1986
    • First described by Ouyang Hui as Abrosaurus gigantorhinus
    • However, his thesis didn’t meet ICZN requirements in order that title is a nomen nudum
    • In 1989 Ouyang formally described Abrosaurus as Abrosaurus dongpoensis
    • Nonetheless, “ensis” is just used to consult with localities so the “i” suffix was used as a substitute, to consult with a male particular person (therefore, Abrosaurus dongpoi)
    • Holotype is a virtually full, properly preserved cranium
    • A fragmentary cranium and skeleton have additionally been discovered, however haven’t been described
    • Had a calmly constructed cranium (“delicate” and “sleek”)
    • Hui described it as a “average sized sauropod with a carefully constructed cranium”
    • Additionally had “extraordinarily massive” fenestrae within the cranium
    • Had a comparatively low, elongated cranium
    • Had openings within the cranium much like Camarasaurus, however the cranium of Camarasaurus is extra sturdy
    • Had slim, elongated nasals, that had been about one-third the size of the cranium
    • Had “plentiful” tooth
    • Had spoon-shaped tooth
    • Initially described as a camarasaurid, although that is probably not the case
    • Later analysis discovered it to be a basal member of Macronaria, like Camarasaurus, however wants extra analysis (equivalent to the outline of the second specimen) to be extra sure
    • Housed because the Zigong Dinosaur Museum
    • Different dinosaurs that lived across the identical time and place included stegosaurs equivalent to Bashanosaurus, Huayangosaurus, sauropods equivalent to Shunosaurus, Omeisaurus, and theropods equivalent to Leshansaurus, Gasosaurus, Yangchuanosaurus
    • Different animals that lived across the identical time and place included Crocodyliformes, pterosaurs, and turtles

    Enjoyable Reality:

    Ankylosaurs might have had totally different sized tail golf equipment and extra armor relying on in the event that they had been male or feminine (AKA sexual dimorphism).

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