Spicomellus, Nanotyrannus, and tons of other fantastic new discoveries!

For links to every news story, all of the details we shared about Garudimimus, and our fun fact check out https://iknowdino.com/Garudimimus-Episode-555/

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Dinosaur of the day Garudimimus, an ornithomimosaur that wasn't that fast.

In dinosaur news this week:

• Smallest find to make a big impact: Ahvaytum (ep 531)
• HM: Archaeocursor (ep 533)
• HM: Itaguyra (ep 545)
• HM: Maleriraptor (ep 550)
• HM: Taleta (ep 553)
• Most surprising new dinosaur: Nanotyrannus lethaeus (ep 554)
• Best new therizinosaur: Duonychus (ep 535)
• Best new pachycephalosaur: Zavacephale (ep 553)
• HM: Brontotholus (ep 553)
• Best new ornithomimid: Mexidracon (ep 551)
• Best new basal neornithischian: Pulaosaurus (DD 7)
• Best new ankylosaurid genus: Huaxiazhoulong (ep 530)
• Best new dromaeosaur: Shri rapax (DD8)
• Best new compsognathid*: Huadanosaurus (ep 541)
• Best new iguanodontian: Istiorachis (ep 548)
• Best new megaraptor: Joaquinraptor (ep 552)
• Best new basal sauropodomorph: Xingxiulong yueorum (ep 549)
• HM: Lishulong (ep 539)
• Best new enantiornithine: Navaornis (ep 533)
• New genus hiding for the longest in plain sight: Newtonsaurus (DD8)
• HM: Tameryraptor (ep 534)
• Best new basal allosauroid: Yuanmouraptor (ep 536)
• Best new oviraptorosaur: Yuanyanglong (ep 532)

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Two separate groups of researchers have independently confirmed that Nanotyrannus is its own genus and not just a juvenile T. rex. Plus a new Nanotyrannus species and another new tyrannosauroid and tyrannosaur injuries.

For links to every news story, all of the details we shared about Calamosaurus, and our fun fact check out https://iknowdino.com/Calamosaurus-Episode-554/

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Dinosaur of the day Calamosaurus, a small theropod that’s been mixed up with lots of other theropods.

In dinosaur news this week:

• A new complete Nanotyrannus skeleton confirms that it deserves its own genus and is not just a juvenile Tyrannosaurus rex
• A close analysis of the small throat (hyoid) bone from the Nanotyrannus holotype confirms it was nearly full-sized
• Review of the taxonomic history of Nanotyrannus
• There’s a new Late Cretaceous tyrannosauroid, Khankhuuluu mongoliensis, related to the fluffy Yutyrannus
• Scotty the T. rex appears to have blood vessel structures in a rib showing how it healed. (in the fun fact)
• Companies are claiming to make luxury fashion items out of T. rex leather but that’s not currently possible. (in the fun fact)

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Zofia Kielan-Jaworowska was a Polish scientist and the first woman to lead a dinosaur excavation expedition. On her explorations of the Gobi Desert, she discovered many famous animals, including Deinocheirus—a dinosaur that, for decades, was known only by its enormous, terrifying arms & claws. But when we finally found the rest of its body, it turned out to look more like Jar Jar Binks. This is the story of Zofia, and the dinosaur that surprised us all - as told originally aired on the History Dispatches podcast with Matt and McKinley Breen.

History Dispatches Podcast: https://historydispatches.com/

The Explorers Podcast: https://explorerspodcast.com/

History Dispatches & Explorers Podcast are part of the Airwave Media Network: www.airwavemedia.com

I Know Dino Website: https://iknowdino.com

I Know Dino Book: https://books.disney.com/book/i-know-dino/

Sources:

https://archive.org/details/inpursuitofearly0000kiel/page/n5/mode/2up

https://archive.org/details/huntingfordinosa00kiel

https://iknowdino.com/deinocheirus-episode-527/

https://www.nature.com/articles/520158a

https://www.nature.com/articles/nature.2014.16203

https://www.nature.com/articles/nature13874

https://www.nature.com/articles/nature13930

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Zavacephale is both the oldest and most complete pachycephalosaur ever found. Plus three more new dinosaurs and Michele Hollow joins us to discuss Mary Anning.

For links to every news story, all of the details we shared about Stenopelix, links from Michele Hollow, and our fun fact check out https://iknowdino.com/Stenopelix-Episode-553/

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Dinosaur of the day Stenopelix, a small (likely) ceratopsian that we only know from impressions in sandstone slabs.

Interview with Michele Hollow, an award-winning journalist, and author of the book “Jurassic Girl: The Adventures of Mary Anning, Paleontologist and the First Female Fossil Hunter”, a historical fiction book for both young and less young readers.

In dinosaur news this week:

• The most complete and oldest known pachycephalosaur was discovered and named Zavacephale rinpoche
• There’s a new "thunder dome" pachycephalosaur, Brontotholus harmoni
• There’s a new flat-headed hadrosaur, Ahshislesaurus wimani, that was as large as a T. rex
• There’s a new hadrosaur dinosaur from Morocco named Taleta taleta (yes the genus and species name are the same)

This episode is brought to you by our patrons. Their generous contributions make our podcast possible! You can now save 10% by paying annually. Go to Patreon.com/iknowdino to sign up and help us keep creating I Know Dino every week.

This episode is brought to you by Rula. Rula patients typically pay $15 per session when using insurance. Connect with quality therapists and mentalhealth experts who specialize in you at https://www.rula.com/ikd/ #rulapod

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Plus, a new species of megaraptor, Joaquinraptor casali, is one of the most complete ever found.

For links to every news story, all of the details we shared about Dromaeosauroides, and our fun fact check out https://iknowdino.com/Dromaeosauroides-Episode-552/

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Dinosaur of the day Dromaeosauroides, a theropod we only know from two teeth, and maybe some fossilized poop.

In dinosaur news this week:

• A new megaraptor, Joaquinraptor casali, may have died in the middle of eating a crocodilian
• Analyzing skull mechanics can tell us a lot about different theropod dinosaur feeding strategies
• The alvarezsaur Bannykus ate meat (instead of maybe insects)
• A poor sauropod got gnawed on by a theropod (probably)
• The gut contents of a subadult Diamantinasaurus shows it was not a picky eater and it did not chew its food
• A closer look at coprolites found in the Lameta Formation in India show they were likely pooped out by an omnivorous animal, and not a titanosaur (as previously thought)

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We joined the Common Descent podcast for their Silver Screen Science segment.

We go through everything Jurassic World Rebirth got right and wrong as well as our nit-picks of the details that got under our skin.

Check out the More Thoughts segment at https://www.patreon.com/posts/142875146/ for more.

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Amy Atwater, co-host of Weird & Dead joins to discuss some of her favorite fossils and her new book The Fossil Keeper's Treasure. Plus a new ornithomimosaur with big hands, Mexidracon, and monstersaurs

For links to every news story, all of the details we shared about Mochlodon, links from Amy Atwater, and our fun fact check out https://iknowdino.com/Mochlodon-Episode-551/

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Dinosaur of the day Mochlodon, a stocky island dinosaur that was first found way back in 1859.

Interview with Amy Atwater, a paleontologist and science communicator, the Director of Paleontology at Friends of Dinosaur Ridge in Morrison, Colorado, co-host of the podcast Weird & Dead, and author of the book “The Fossil Keeper’s Treasure”. Follow her @Mary_Annings_Revenge

In dinosaur news this week:

• There’s a new ornithomimosaur with very large hands named Mexidracon longimanus

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Herrerasaurs are some of the earliest known dinosaurs and these Triassic carnivores have been found all over the world. They're a confusing group, but thanks to pathologies and fossilized poop we know a bit about how they behaved.

For links to every news story, all of the details we shared about Sanjuansaurus, and our fun fact check out https://iknowdino.com/Sanjuansaurus-Episode-550/

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Dinosaur of the day Sanjuansaurus, a herrerasaur dinosaur whose existence helps show dinosaurs’ dominance.

In dinosaur news this week:

• There’s a new herrerasaur dinosaur, Maleriraptor kuttyi
• Herrerasaurs probably bit each other on the face
• Herrerasaurs were a successful, complicated group

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A new Spicomellus find reveals just how crazy its armor was. Plus Six brand new sauropods!

For links to every news story, all of the details we shared about Liaoningosaurus, and our fun fact check out https://iknowdino.com/Liaoningosaurus-Episode-549/

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Dinosaur of the day Liaoningosaurus, a small ankylosaur that may or may not have been semi-aquatic and carnivorous.

In dinosaur news this week:

• A much more complete Spicomellus skeleton was found with some of the strangest and most elaborate armor ever seen
• There’s a new sauropodomorph species, Xingxiulong yueorum, which is quite a bit bigger than the previous species from the genus
• The oldest known sauropodomorph from East Asia, Wudingloong wui, was just described
• There’s a new eusauropod, Huashanosaurus qini, named for famous mountain with impressive rock art
• There’s a new mamenchisaurid sauropod, Tongnanlong zhimingi, which is estimated to be over 80ft long
• There’s a new rebbachisaurid (vacuum cleaner head) sauropod, Cienciargentina sanchezi, from Patagonia
• There’s another new rebbachisaurid, Astigmasaura genuflexa, measuring in at about 59ft (18m) long and weighing over 10 tons

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Dr. Dean Lomax and Bob Nicholls join to tell us about their upcoming book The Secret Lives of Dinosaurs (which includes some really cool fossils like an extremely rare two-headed fossil)

For links to every news story, all of the details we shared about Calamospondylus, links from Dean Lomax and Bob Nicholls, and our fun fact check out https://iknowdino.com/Calamospondylus-Episode-548/

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Dinosaur of the day Calamospondylus, an Early Cretaceous oviraptorosaur that was probably under 2.5m (~8ft) long.

Interview with Dean Lomax and Bob Nicholls. Dean Lomax is an award-winning paleontologist, author, and presenter, as well as Honorary Research Fellow at The University of Manchester & 1851 fellow at the University of Bristol. He’s the leading authority on ichthyosaurs, and he also excavates and researches dinosaurs. Bob Nicholls is a world-renowned natural history artist who specializes in prehistoric animals, plants, and environments. His work has been published in more than 40 books and exhibited in museums, universities, and attractions around the world. There new book is The Secret Lives of Dinosaurs: Unearthing the Real Behaviors of Prehistoric Animals

In dinosaur news this week:

• There’s a new iguanodontian dinosaur that had a large sail on its back, Istiorachis macarthurae

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The discovery of a new Psittacosaurus species from a braincase, how spinosaur brains adapted for eating fish, revisiting T. rex intelligence, and many more dinosaur brain updates

For links to every news story, all of the details we shared about Tatankacephalus, and our fun fact check out https://iknowdino.com/Tatankacephalus-Episode-547/

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Dinosaur of the day Tatankacephalus, the "bison-headed" armored dinosaur.

In dinosaur news this week:

• A skull, including a braincase, is enough to tell us there’s a new Psittacosaurus species, Psittacosaurus houi
• Studying dinosaur brains is an evolving field
• Brain size varied in dinosaurs
• Ceratopsians became less intelligent and had worse hearing and a worse sense of smell as they evolved to larger sizes
• Ornithopods, and especially hadrosaurs, had bigger brains than we thought
• Thescelosaurus had a powerful sense of smell, a sensitive vestibular system, but terrible hearing—all which may mean it was a burrower
• A study of spinosaur brains and skulls helps show how they adapted to eat fish
• Living birds have high EQs which they evolved from non-avian dinosaurs (although we don't really use EQs much anymore)
• Shuvuuia may not have had specialized hearing
• The enantiornithe Navaornis hestiae tells us a lot about bird brains
• Unique brain shape in birds may be why birds survived non-avian dinosaurs after the mass extinction event
• Parrots and humans may use similar brain mechanisms to produce complex sounds
• Bird brains (and our brains) are wired for taking turns when communicating
• T. rex had the intelligence of a baboon paper
• Rebuttal to T. rex baboon intelligence paper

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