Episode 502: A brand new raptor with probably cannibalistic chew marks

Episode 502: A brand new raptor with probably cannibalistic chew marks


Episode 502: A brand new raptor discovered with probably cannibalistic chew marks. Plus our first ever Di-Know-It-All puzzle, a brand new strategy on the semi-aquatic Spinosaurus mannequin, what whales and dinosaurs have in widespread, and extra

Information:

  • There’s a brand new unenlagiine dromaeosaur, Diuqin lechiguanae, that was bitten exhausting sufficient to go away punctures on its higher arm bone supply
  • Scientists studied cranium shapes of 99 animals to determine how a lot time Spinosaurus spent within the water supply
  • The sauropod on the NHM formally has a brand new nickname (identical because the previous nickname) supply

Dinosaur Connection Problem: Cetaceans (whales, dolphins, and porpoises) supply

Di-Know-It-All Problem:

You may win a big Spinosaurus tooth, fossilized leaf, and extra by successful our Di-Know-It-All Problem! Every week from episode 502 to 509 we’ll learn a puzzle on the present which you’ll be able to enter to win by answering questions. This week you may enter at bit.ly/dinochallenge502 and in the event you’re a patron you may reply the patron query at patreon.com/posts/107569799. All the principles for the problem are at bit.ly/dinochallenge24

The dinosaur of the day: Brodavis

  • Hesperornithiform fowl that lived within the Late Cretaceous in what’s now North America and Asia
  • Seemed like a loon fowl (water birds that solely go on land to mate and for his or her eggs—they dive within the water to catch small fish and pursue their prey. They will fly, however they want a runway for takeoff, they usually run throughout the highest of water to get pace to carry off)
  • Thought of to be a medium-sized fowl
  • Just a little smaller than a loon, and had enamel
  • Widespread loons are about 71 to 81 cm (28 to 32 in) lengthy and may weigh between 4 and 5.5 kg (9 and 12 lb)
  • Brodavis had feathers and a beak, walked on two legs, had a brief tail
  • Doable Brodavis might fly
  • Had frivolously constructed bones (lack of pachyostosis, which is when the bones thicken to make them extra dense)
  • First identified freshwater Hesperornithiform
  • Hunted in contemporary water
  • Swam in rivers and lived inland, in freshwater environments
  • Hesperornithes had been aquatic and intently associated to the ancestors of recent birds
  • Lived in salt and freshwater habitats within the Northern Hemisphere
  • They had been good swimmers and divers
  • Had lengthy snouts with barely hooked beaks, and had sharp enamel
  • Hesperornithiforms typically couldn’t fly
  • Hesperornithiformes typically have pachyostotic bones, which assist them dive
  • A 2016 research examined a proper femur (thigh bone) assigned to Brodavis sp. (unknown species)
  • Discovered the bone to be thicker, which can imply Brodavis did finally lose the power to fly, like Hesperornis
  • Sort species is Brodavis americanus
  • Described in 2012 by Larry Martin, Evgeny Kurochkin, and Tim Tokaryk
  • Additionally named the household Brodavidae
  • Brodavidae are foot-propelled diving birds
  • Brodavidae could also be an early clade of hesperornithiforms that dove in freshwaters and will have been capable of fly
  • Clade lived till the tip of the Cretaceous
  • Described 4 species: americanus, baileyi, mongoliensis, and varneri
  • Fossils discovered within the Eighties
  • Sort species is Brodavis americanus, primarily based on a part of a left foot present in Canada (Frenchman Formation)
  • Genus identify Brodavis is from Brodkorb, “in reminiscence of the late Professor Pierce Brodkorb who did a lot to additional the research of fossil birds”
  • And “avis” means fowl in Latin
  • Species identify americanus refers to the place the species was identified to reside
  • Brodavis baileyi is known as additionally primarily based on a part of a left foot, present in South Dakota, U.S. (Hell Creek Formation)
  • Species identify baileyi is in honor of Bruce Bailey who discovered the holotype
  • Brodavis mongoliensis is known as from a part of a left foot, present in Mongolia (Nemegt Formation)
  • Species identify mongoliensis refers to the place the species was identified to reside
  • Brodavis mongoliensis foot bone appears extra slender, thinner, and longer
  • Brodavis varneri was named primarily based on a part of a left foot present in South Dakota (Sharon Springs Formation)
  • When first described, stated Brodavis varneri was much less doubtless
  • Initially was named as a second species of Baptornis in 2007, by James Martin and Amanda Crodes-Individual
  • Within the paper naming Brodavis, the authors stated “Brodavis varneri ought to in all probability have its personal generic designation, however we’ve got chosen to not erect a brand new genus for it in hopes that extra materials will make the relationships between the assorted varieties extra clear”
  • The 2016 paper affirmed Baptornis varneri to be Brodavis varneri

Enjoyable Reality:

There is likely to be a large raptor (dromaeosaur) that lived in what’s now Uzbekistan

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