Episode 429: A mini ankylosaur and an enormous hadrosaur

Episode 429: A mini ankylosaur and an enormous hadrosaur. Plus Lindsey Kinsella joins to debate his new e book “The Lazarus Taxa” which incorporates scientists touring to the Cretaceous and encountering many attention-grabbing dinosaurs.


  • A brand new tiny ankylosaur from Patagonia, Patagopelta supply
  • Child tyrannosaurs could have been strolling buddies supply


Lindsey Kinsella, a paleontology fanatic, and author & creator of the sci-fi novel “The Lazarus Taxa” which incorporates scientists time touring to the Late Cretaceous. Join with him on fb, instagram, twitter, or tiktok.



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The dinosaur of the day: Magnapaulia

  • Lambeosaurine hadrosaurid that lived within the Late Cretaceous in what’s now Baja California, Mexico (El Gallo Formation)
  • Very giant hadrosaur, with a crest on prime of its head, a cumbersome physique that walked on 4 legs and had a tall tail
  • Initially estimated to be between about 49 to 54 ft (15 to 16.5 m) lengthy and weigh as much as 8.8 tons
  • In 2012, Prieto-Márquez and others estimated it to be round 41 ft (12.5 m) lengthy
  • Kind species is Magnapaulia laticaudus
  • Described in 1981 by William Morris
  • Initially Morris referred the fossils to Hypacrosaurus altispinus, primarily based on the lengthy neural spines of the tail, however then he modified it to cf. Lambeosaurus, primarily based on particulars of the premaxilla (higher jaw), after which he named it Lambeosaurus laticaudus (primarily based on its giant measurement and the tall neural spines within the tail)
  • Later scientists steered Lambeosaurus laticaudus may very well be Hypacrosaurus, or not a legitimate taxon
  • Named by Albert Prieto-Márquez, Luis Chiappe, and Shantanu Joshi as Magnapaulia in 2012
  • Genus title means “giant” and “paulia” is in honor of “Mr. Paul Haaga for his excellent assist to the analysis and public applications of the Pure Historical past Museum of Los Angeles County and its Dinosaur Institute”
  • Species title means “broad tail”
  • Fossils present in an excavation by the Pure Historical past Museum of Los Angeles County between 1968 and 1974
  • Holotype consists of elements of the jaw, vertebrae, elements of the leg, elements of the pelvis, and elements of the arm
  • 24 referred specimens discovered, all inside 3 m of the place the holotype was discovered. Fossils embrace partial skeletons, and pores and skin impressions
  • Morris thought Lambeosaurus laticaudus spent its time within the water, as a result of it was so massive and it had such a tall, slender tail (good for swimming? might give it a push), weak connections within the hips, and a healed damaged thigh bone that he thought would have been too tough of an harm to outlive on land (simpler to get well within the water, much less weight on the leg)
  • Prieto-Márquez et. al stated that grownup hadrosaurids had been between 7 to 10 m lengthy, and Magnapaulia was for much longer (“one of many largest identified hadrosaurid species, not solely in North America, however on this planet”), which makes it a “large” hadrosaurid
  • Chiappe wrote on his web site that “The dimensions was so spectacular that it might have been mistaken for an Apatosaurus!”
  • Had a proportionately slender femur
  • Solely fragments of the crest have been discovered
  • Had elongated chevrons and vertebral spines, just like Hypacrosaurus, which meant it had a tall tail
  • Tail of 1 specimen discovered (LACM 17712) had pores and skin impressions with giant scales as much as 4 cm extensive, surrounded by 1 cm extensive hexagonal and rounded scales
  • Intently associated to Velafrons, which was additionally present in what’s now Mexico (coated in episode 324)
  • Different dinosaurs that lived across the identical time and place embrace dromaeosaurs, tyrannosaurs, hadrosaurs, and ankylosaurs
  • Different animals that lived across the identical time and place embrace lepidosaurs, mammals, and amphibians

Enjoyable Reality:

Ankylosaurs like Patagopelta made it from North to South America throughout Panama throughout the “First American Biotic Interchange.”

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