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Episode 301: Fossilized Dinosaur Ovaries


    Episode 301 is all about Bambiraptor, a small dromaeosaurid recognized from a 95% full holotype of a juvenile.

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    On this episode, we focus on:


    • 9 dinosaur fossils have been discovered with fossilized ovarian tissue. supply
    • The primary dinosaur bone was present in Scotland, that’s not from the Isle of Skye. supply
    • A big Triceratops cranium was excavated in South Dakota. supply
    • A Dino Summer season occasion together with a velociraptor chase by means of a corn maze is being held in Tatenhill England. supply
    • The sauropod constructing in Spring Hill, Florida is now formally listed within the Nationwide Register of Historic Locations. supply
    • A design for a sauropod painted with geometric shapes was shared on-line. supply
    • Enjoyable piece of trivia: there’s a second in Jurassic Park the place you may see one of many crew members of the movie grabbing a raptor’s tail. supply
    • Photographs of Jurassic World Dominion present child dinosaurs supply
    • Minecraft now has an official Jurassic World DLC supply
    • Google Chrome’s hidden dinosaur recreation now has hidden weapons supply

    The dinosaur of the day: Bambiraptor

    • Dromaeosaurid theropod that lived within the Late Cretaceous in what’s now Montana, US (Two Drugs Formation)
    • Very bird-like
    • Had a slender snout
    • Had a wishbone, that regarded just like trendy birds
    • Had lengthy arms
    • Had a protracted, stiff tail
    • Tail could have curved upwards, however it may simply appear to be that based mostly on how the fossils had been preserved
    • Had lengthy hindlimbs, so most likely a quick runner
    • Had sickle-shaped claws
    • Might have had feathers
    • No feathers discovered with the fossil
    • However shut kinfolk discovered to have feathers
    • Proportionally, was just like Archaeopteryx
    • Sort species is Bambiraptor feinbergi
    • Holotype nicknamed Bambi, by Wes Linster, the 14-year-old boy who found the dinosaur
    • Wes Linster discovered the skeleton in 1993, when in search of dinosaurs together with his mother and father close to Glacier Nationwide Park in Montana
    • Genus title due to the specimen’s nickname, Bambi
    • Genus title means “Bambi seizer” or “Bambi thief”
    • Species title in honor of Michael and Ann Feinberg, who bought the fossils and lent them to the Graves Museum of Pure Historical past in Florida
    • Described and named by David Burnham and others in 2000
    • Skeleton is 95% full
    • As a result of the skeleton was so full, has been referred to as the “Rosetta Stone” of raptors (John Ostrom referred to as it a “jewel”)
    • Proper aspect of the skeleton is broken, however the remaining is in good situation (no finish of the tail)
    • First considered a juvenile Saurornitholestes, after which later considered a brand new Velociraptor species, Velociraptor feinbergi
    • Helps present the hyperlink between non-avian dinosaurs and birds
    • Holotype might be a juvenile, and is lower than 3 ft (1 m) lengthy
    • Holotype weighed about 4.4 lb (2 kg)
    • Cranium was about 5 in (13 cm) lengthy
    • Referred specimens embody two adults discovered close to the holotype and an higher jaw bone
    • Solely the juvenile specimen has been described
    • Gregory Paul estimated adults to be 4.3 ft (1.3 m) lengthy and weigh 11 lb (5 kg)
    • Holotype had a big mind for its physique, however may very well be as a result of it was a juvenile (had a bigger ratio of brain-to-body)
    • Or could imply it was extra clever than different dromaeosaurs; hypotheses embody it lived in timber, or it hunted extra agile prey like lizards and mammals
    • Most likely ate small mammals and reptiles
    • Might have been about to succeed in its mouth with its arms, so it may put meals in its mouth with its arms (had opposable fingers)
    • Phil Senter discovered that Bambiraptor may maintain prey in each its arms, convey its meals to its mouth, and in addition contact the guidelines of its first and third fingers collectively (used fossils and casts of Deinonychus and Bambiraptor forelimb bones to check)
    • Might have been in a position to seize prey, kill it with its claws, after which put the meals into its mouth
    • Might have additionally used its sickle claws on its second toes to kill prey
    • Senter discovered Bambiraptor couldn’t dig
    • If feathered, feathers could have gotten in the best way of the arms, although Senter stated he thought the arms could prolonged past the feathers (if there have been feathers)
    • Description in 2000 stated the holotype could have been male, based mostly on its chevrons being just like these in male crocodilians (however not clear)
    • Holotype discovered with hadrosaurs, most likely Maiasaura, in addition to no less than three tyrannosaurid specimens

    Enjoyable Truth:
    Birds solely have one ovary. It’s the left one. The fitting one continues to be technically there, however it’s tiny and undeveloped. In some birds, like kiwis and no less than some raptors, the proper ovary continues to be current.