Two new species, Zhongyuansaurus junchangi and Tianzhenosaurus chengi. How paleontologists use details in the ankylosaur armor to identify the species. Plus, the first ever ankylosaurid (tail club-wielding ankylosaur) footprint.

For links to every news story, all of the details we shared about Mojoceratops, and our fun fact check out https://iknowdino.com/Mojoceratops-Episode-544/

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Dinosaur of the day Mojoceratops, a ceratopsian that got its mojo from its frill.

In dinosaur news this week:

• A new ankylosaur, Zhongyuansaurus junchangi, with "swallowtail" shaped tail armor
• A good overview of how osteoderm patterns vary between different ankylosaur species
• The best way to distinguish ankylosaur species is probably by comparing skulls
• A new ankylosaur skull led to another new ankylosaur species being named: Tianzhenosaurus chengi
• New ankylosaur fossils were excavated in Argentina, a rare find for South America
• Osteoderms may have helped dinosaurs live in arctic conditions

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We saw Jurassic World Rebirth on opening day, but haven't discussed it with each other yet. We share all our favorite moments, dinosaurs, and theories about the movie.

For all of our fun facts and other details go to https://iknowdino.com/-Episode-543/

In this episode, we break down the horror-infused tone of Jurassic World: Rebirth, from malfunctioning park systems to scary Mosasaurus sequences. We explore standout scenes like Bronto Billy’s first appearance in NYC, the Quetzalcoatlus and Spinosaurus teaming up with the Mosasaur. We give our thoughts on the all new cast including Scarlett Johansson (Zora Bennett), Mahershala Ali (Duncan Kincaid), Jonathan Bailey (Dr. Henry Loomis), and other minor characters.

We also dive into updated animal portrayals—like the adorable backpack-sized Aquilops named Dolores, the eerie hybrid Mutadon, and the menacing Distortus rex—along with practical effects and callbacks to earlier films. Finally, we debate what worked, what didn’t, favorite dinos, and lingering questions about the sequel’s direction.

Our Styracosaurus patch is back for a limited time! Join our patreon at the Silesaurus tier or above by the end of August 2025 to get the exclusive patch. You’ll also get a 30 days of dinosaurs PDF booklet, ebooks, shoutouts, I Know Paleo episodes, and a portion of the proceeds will go to charities supporting paleontology. If you're already a patron at the make sure to update your address so we can send you the patch! patreon.com/iknowdino

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New species, old species, size, behavior, and everything we else we know about Allosaurus!

For links to every news story, sources about Allosaurus, and our fun fact check out https://iknowdino.com/Allosaurus revisited-Episode-542/

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Dinosaur of the day Allosaurus, the quintessential (Late) Jurassic theropod.

In dinosaur news this week:

• Free dinosaur event with the Colorado Northwestern Community College Paleo Crew on June 28

Some of the topics from our Allosaurus discussion:

• There are multiple species, including A. fragilis and A. jimmadseni
• Debate over the species A. europaeus
• Whether A. europaeus could be A. fragilis
• There's also a new species (and no more Saurophaganax): A. anax
• Plus, we get into its Bone Wars history, the Cleveland-Lloyd Dinosaur Quarry, other former species, its hunting and scavenging habits, all the pathologies, what its habitat was like, future research, and more

Dire wolves are the subject of the latest episode of I Know Paleo, an exclusive series for Triceratops patrons and up. We release new episodes (selected by our patrons) monthly. Get access to all 28 I Know Paleo episodes and every future episode (plus other rewards) by joining at Patreon.com/iknowdino

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