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Episode 351: A fish-eating raptor

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    Episode 351 is all about Linhenykus, the one non-avian dinosaur with a single finger.

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    On this episode, we talk about:

    Information:

    • A brand new unenlagiine raptor, Ypupiara, was present in Brazil with jaws that look like specialised for consuming fish supply

    • Freeway development in In São Paulo, Brazil uncovered a possible titanosaur claw in a cliff supply
    • The India Seashell Museum has a brand new Dinosaur Museum supply
    • Binder Park’s youngsters’s zoo in Michigan, received a grant to construct a “Zoorassic Park” of dinosaur sculptures supply

    • A 13,000 pound concrete minigolf T. rex sculpture was bought for $11 in Milwaukee, Wisconsin supply
    • “Brickosaurs” had been on show in Croydon, London constituted of half 1,000,000 toy bricks supply
    • In Turkey a 150,000 balloon sculpture included a number of dinosaurs and set a Guinness World Report supply

    • Looper printed a listing of weird dinosaur motion pictures supply

    The dinosaur of the day: Linhenykus

    • Alvarezsaurid theropod that lived within the Late Cretaceous in what’s now Interior Mongolia, China (Wulansuhai Formation)

    • Fairly cute, had brief arms, lengthy legs and tail, and an elongated head
    • Physique kind much like Gallimimus (however a lot smaller, and with solely the one finger on every hand)
    • Small, with a 2.8 in (7 cm) lengthy femur

    • Estimated to weigh about 1 lb (450 g), about the identical as a parrot
    • Described in 2011 by Xing xu and others
    • Discovered a partial skeleton, together with forelimb, a part of the pelvis, vertebral column, almost full hind limbs

    • Sort species is Linhenykus monodactylus
    • Genus identify means “Linhe claw”
    • Genus identify refers to Linhe, town close to the place the fossil was discovered

    • Species identify means “single finger”
    • Refers to it being the “solely recognized functionally monodactyl nonavian dinosaur”, based on the unique paper
    • First recognized alvarezsaurid to have solely the one digit (the second digit, particularly)

    • Different alvarezsaurids have a big second digit and really brief third and fourth digits (couldn’t use the outer fingers for something)
    • Had a decreased third metacarpal (connects wrist to fingers) however no finger bones (tapers off and was too small to assist a finger)
    • No fourth metacarpal discovered, however for the reason that third metacarpal is so brief and didn’t have finger bones, Linhenykus most likely didn’t have a fourth metacarpal

    • Most basal parvicursorine, a subfamily with massive second digits
    • Exhibits mosaic evolution in alvarezsauroid fingers, since later alvarezsaurids had extra digits
    • Helps present the complexity of theropod hand evolution (theropods began with 5 fingers, then three, then two, like T. rex, and in addition one)

    • Might have eaten bugs, and used its claws to dig round ant and termite nests
    • Palms confronted down, so that may assist with digging
    • Gareth Dyke and Darren Naish in 2011 questioned the paper, about the way it didn’t actually embrace European alvarezsauroids, and in addition instructed Linhenykus was not distinct sufficient to be totally different from Parvicursor, an analogous, small dinosaur from Barun Goyot Formation named in 1996

    • Stated the one distinction clear to them was “a slight discrepancy in dimension”
    • Xing Xu et. al responded in 2011, and responded to all of the factors (principally didn’t agree and mentioned Linhenykus had numerous options that made it distinct from Parvicursor, together with some proportional variations, like Linhenykus having an extended metatarsal III than Parvicursor
    • Additionally mentioned Parvicursor had solely been briefly described, and a extra detailed comparability would most likely present much more variations

    • Different animals that lived across the identical time and place included theropods, ankylosaurs, ceratopsians, small mammals, and lizards

    Enjoyable Truth:
    It’s doable to call a brand new dinosaur primarily based on a holotype which has been misplaced or destroyed.

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