Episode 387: The day that dinosaurs went extinct. Riley Black joins us to share her take on what it would have been like to live through the Chicxulub impact event.
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- There was a new response to the paper estimating there were probably billions of T. rex source
- In Missouri, the House recently voted to update the name of their state dinosaur from Hypsibema to Parrosaurus source
- A group of Toronto Raptors fans dressed up in inflatable dinosaur costumes to celebrate the team making the playoffs source
- The Smithsonian is making exclusive products with Jurassic World: Dominion source
- Past Eons Productions is recreating the BBC Walking With Dinosaurs documentary using Jurassic World Evolution 2 mods source
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Riley Black, a science writer and communicator, whose work has appeared in Smithsonian, National Geographic, and Scientific American. She has written a number of books, including “The Last Days of Dinosaurs: An Asteroid, Extinction, and the Beginning of Our World“, which came out this week. Follow her on Twitter and Instagram @Laelaps.
The dinosaur of the day: Macrogryphosaurus
- Elasmarian ornithopod that lived in the Late Cretaceous in what is now Patagonia, Argentina (Sierra Barrosa Formation)
- Looked kind of like a hadrosaur, but with a smaller head and less bulky body
- Had a longish head, long tail, and walked on two legs
- Largest known elasmarian
- Estimated to be about 20 ft (6 m) long, though may have gotten larger
- Had a long neck and coelurosaur-like tail
- Had 10 long vertebrae in the neck
- Had intercostal plates (bony structures in the ribs) along the side of the torso
- Had a fused, birdlike sternum
- Had a short, stiff torso
- Type species is Macrogryphosaurus gondwanicus
- Genus name means “big enigmatic lizard”
- Species name refers to Gondwana
- Described in 2007 by Jorge Calvo and others
- Fossils found in 1999 during field work by the National University of Comahue
- A young boy, Rafael Moyano, first found the fossils
- Found a nearly complete, articulated adult skeleton (includes most of the neck, the thorax, the pelvis, and most of the tail)
- Has been described as beautifully preserved
- Appears in Chased by Dinosaurs, a sequel to Walking with Dinosaurs
- Other dinosaurs that lived around the same time and place include the titanosaurs, Kaijutitan and Mendozasaurus, and the megaraptorid Murusraptor
Both herbivorous and carnivorous theropods evolved stronger jaws over time.
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