Five new sauropods from all across the world and the sauropod family tree. Plus new embryos and hatchlings, sauropod speed estimates, and much much more.

For links to every news story, all of the details we shared about Cetiosauriscus, and our fun fact check out https://iknowdino.com/Cetiosauriscus-Episode-559/

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Dinosaur of the day Cetiosauriscus, a sauropod that isn't Cetiosaurus, but was also from Middle Jurassic of England.

In dinosaur news this week:

• Sauropod experts wrote an introduction to Diplodocoidea
• There’s a new titanosaur sauropod, Utetitan zellaguymondeweyae
• A new Alamosaurus fossil was found
• There’s a new dicraeosaurid sauropod, Athenar bermani
• There’s a new titanosaur sauropod, Yeneen houssayi
• There’s a new eusauropod sauropod, Jinchuanloong niedu
• There’s a new species of the sauropod Mamenchisaurus, Mamenchisaurus sanjiangensis
• Some sauropods chose to lay eggs surrounded by fast moving waters, possibly to protect them from predators
• New Massospondylus embryos and hatchling show how they started on all fours before growing up and walking on two legs
• Large sauropods may have had max speeds of 6 mph (10 km/h)
• A nearly complete Plateosaurus tail shows this sauropodomorph could do damage with its tail

This episode is sponsored by Squarespace, go to https://www.squarespace.com/IKD to save 10% off your first purchase of a website or domain using code IKD

This episode is brought to you by the Colorado Northwestern Community College. Join them for two weeks digging up dinosaur bones in the field, preparing fossils in their lab, or in their new field geology program. For details go to CNCC.edu/paleo26

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New track sites, swim tracks, and mating dance arenas around the world tell us about the behavior of theropods, ceratopsians, and sauropods. Plus David Spira joins from Room Escape Artist to share his favorite dinosaur themed escape rooms.

For links to every news story, all of the details we shared about Segnosaurus, links from David Spira, and our fun fact check out https://iknowdino.com/Segnosaurus-Episode-558/

Join us at www.patreon.com/iknowdino for dinosaur requests, bonus content, ad-free episodes, and more.

Dinosaur of the day Segnosaurus, a therizinosaur with interesting teeth.

Interview with David Spira, co-creator of RoomEscapeArtist.com, which publishes well-researched, rational, and reasonably humorous escape room reviews, design tips, player tips, and industry commentary

In dinosaur news this week:

• The Science Museum of Minnesota closed for a day in response to the local ICE presence. If you want to support Minnesotans go to www.standwithminnesota.com/
• In Bolivia, there are almost 18,000 theropod dinosaur tracks that show evidence of running, sauntering, and swimming
• An earlier study of the Carreras Pampa site also found that the theropods feet sunk in the mud
• One set of footprints shows the fastest running theropod trackway in the Cretaceous
• Scientists re-examined the longest known theropod trackway in China
• Dinosaur Ridge, Colorado, has the largest known dinosaur mating dance arena
• Tracks from 76 million years ago may show that ceratopsians and ankylosaurs hung out together
• Paleontologists found a set of sauropod tracks that show it made a loop
• Scientists found multiple trackways in Oxfordshire, England, from mostly sauropods walking at a steady pace
• Theropod footprints were found in a crisscross pattern in Texas, U.S.
• Thousands of prosauropod footprints from the Triassic were found in a national park in Italy

This episode is brought to you by the Colorado Northwestern Community College. Join them for two weeks digging up dinosaur bones in the field, preparing fossils in their lab, or in their new field geology program. For details go to CNCC.edu/paleo26

And by Squarespace, go to https://www.squarespace.com/IKD to save 10% off your first purchase of a website or domain using code IKD

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Robert (Bob) Nicholls has been painting, sculpting, and painting some of our favorite paleoart for decades. He joins us to share how he does it. Plus, a fossil found hundreds of feet below a natural history museum; The world's oldest cerapodan dinosaur; And new theropod and iguanodontian fossils

For links to every news story, all of the details we shared about Emausaurus, links from Bob Nicholls, and our fun fact check out https://iknowdino.com/Emausaurus-Episode-557/

Join us at www.patreon.com/iknowdino for dinosaur requests, bonus content, ad-free episodes, and more.

Dinosaur of the day Emausaurus, a very early armored dinosaur to rival Scutellosaurus and Scelidosaurus.

Interview with Bob Nicholls, world-renowned paleoartist, painter, sculptor, and illustrator. His work has been published in more than 40 books (including the Secret Lives of Dinosaurs) and exhibited in nearly 50 museums, universities, and attractions around the world. He’s also appeared on a number of shows and he designed coins for the Royal Mint. Follow him @BobNichollsart

In dinosaur news this week:

• Paleontologists found the world’s oldest cerapodan dinosaur in Morocco
• Scientists found a dinosaur bone underneath the parking lot of the Denver Museum of Nature and Science
• New theropods have been found at the St. George Dinosaur Discovery Site in Utah, U.S.
• There’s a new large iguanodontian dinosaur that lived in the Late Jurassic in what is now Portugal

This episode is sponsored by Squarespace, go to https://www.squarespace.com/IKD to save 10% off your first purchase of a website or domain using code IKD

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.