When Sharks Swam the Great Plains

  • Published on: 04 December 2018
  • Check out Origin of Everything: https://www.youtube.com/channel/UCiB8h9jD2Mlxx96ZFnGDSJw

    If you’ve ever been to, or lived in, or even flown over the central swath of North America, then you’ve seen the remnants of what was a uniquely fascinating environment. Scientists call it the Western Interior Seaway, and at its greatest extent, it ran from the Caribbean Sea to the Canadian Arctic.

    Thanks to Dmitry Bogdanov, Nobu Tamura, C.R. Scotese, NASA and the many others listed throughout the video for making their images available to use.

    Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios

    Super special thanks to the following Patreon patrons for helping make Eons possible:

    Katie Fichtner, Anthony Callaghan, Neil H. Gray, Marilyn Wolmart, Esmeralda Rupp-Spangle, Gregory Donovan, Ehit Dinesh Agarwal, سلطان الخليفي, Gabriel Cortez, Marcus Lejon, Anel Salas, Robert Arévalo, Robert Hill, Kelby Reid, Todd Dittman, Betsy Radley, PS, Colin Sylvester, Philip Slingerland, John Vanek, Jose Garcia, Eric Vonk, Tony Wamsley, Henrik Peteri, Jonathan Wright, Jon Monteiro, James Bording, Brad Nicholls, Miles Chaston, Michael McClellan, Jeff Graham, Maria Humphrey, Nathan Paskett, Connor Jensen, Sapjes, Daisuke Goto, Hubert Rady, Yuntao Zhou, Gregory Kintz, Tyson Cleary, Chandler Bass, Maly Lor, Joao Ascensao, Tsee Lee, Sarah Fritts, Ruben Winter, Ron Harvey Jr, Jacob Gerke, Alex Yan

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    Oceans of Kansas: A Natural History of the Western Interior Seaway (Second Edition) by Michael J. Everhart.
  • Runtime : 12:41
  • dinosaurs dinos paleo paleontology scishow eons pbs pbs digital studios hank green john green complexly fossils natural history North America Western Interior Seaway sharks ancient sea predators plesiosaurs mosasaurs reptiles Great Plains carnivores Farrallon plate Cretaceous Jurassic Appalachia Laramidia Clams Xiphactinus kansas limestone Clidastes Tylosaurus Styxosaurus toothy fish niche partitioning


  • schempgirl1
    schempgirl1   48 minuts ago

    I liked the shout out to Hays, KS the population is around 20,000.

  • schempgirl1
    schempgirl1   52 minuts ago

    I have seen a fossil of xiphactinus with another fish inside it in Colby, KS

  • Mike mizzle
    Mike mizzle   5 days ago

    Ansestors of modern seals, otters, and Walrus please!!!!!

  • emery hurst
    emery hurst   6 days ago

    Not to mention that pteranodon also lived on the shore of the western interior seaway as well.

  • Mitchell Skene
    Mitchell Skene   6 days ago

    No matter what, I'll always call the Western interior Seaway "Hell's aquarium"

  • Abhinav Banerjee
    Abhinav Banerjee   1 weeks ago

    How to get the T-shirt you are wearing? It looks really cool.

  • Patrick Pinto
    Patrick Pinto   1 weeks ago

    Honestly speaking this is the greatest YouTube page rn.

  • Hugs273
    Hugs273   1 weeks ago

    Great video! Any way to put a human shape to see scale of size of these animals? Thanks.

  • Trueantitheist
    Trueantitheist   2 weeks ago

    It crazy to think that certain inner lands and deserts used to be underwater but then you remember that the earth is always moving and dynamic, ever changing very similar to life.

  • Sunnchilde
    Sunnchilde   2 weeks ago

    I knew there was an inland sea, but I didn't realize it was so overrun with monsters! What a nightmare.

  • Laurie Penner
    Laurie Penner   3 weeks ago

    Loads of older buildings in Canada are made from Tyndall limestone, which is chock full of marine invertebrate fossils. If you tour the legislature building in Winnipeg, they even give you a pamphlet that shows where in the building you can see the best old fossils (and I'm not talking about politicians!)

  • Duane Wente
    Duane Wente   3 weeks ago

    I live about five blocks from Sternberg, it's actually a great museum if you're going through Kansas on I-70.

  • Emma Cat
    Emma Cat   3 weeks ago

    Chicago sits on top of ancient Silurian reefs.

  • Joelle Wong
    Joelle Wong   1 months ago

    This is one of my favorite Eons episodes. Cool ancient marine life!

  • Linda T
    Linda T   1 months ago

    lol I always laugh when American's pronouce things such as niche and route hahaha...

  • KTSP
    KTSP   1 months ago

    If I stayed where I am now and went back in time far enough my state( Texas ) and a the middle of the us would be a sea

  • ivan abrosimov
    ivan abrosimov   2 months ago

    i like how your smiling when you said the 2.5 long fish inside xiphactinus must have exploded some of its organs or something.

  • Jake Currier
    Jake Currier   2 months ago

    I went to college in Hays, KS and have seen the fossil shown, fish within a fish, very cool to see this featured in an educational video.

  • JoJo Bean
    JoJo Bean   2 months ago

    It shows Michigan and its lakes are intact. Any way to see how they form?

  • Stanley Osburn
    Stanley Osburn   2 months ago

    I came across a airra with fossilized animals in the donkey hills in Idaho one rock has the rib cage of a large animal of some kind ,the ribcage is 6ft long

  • B Fowl
    B Fowl   2 months ago

    Now I wanna build a seashell castle

  • Dennis Weber
    Dennis Weber   2 months ago

    can the western interior seaway come back w/ global warming?

  • Maggot
    Maggot   2 months ago

    Why does no one ever mention the third large landmass up north?

  • Kevin Lalonde
    Kevin Lalonde   2 months ago

    Wow crazy that the great lakes were around back then

  • Login Yoass
    Login Yoass   2 months ago

    I've found tube like fossils of plants and some shells

  • Gloria McClamma
    Gloria McClamma   3 months ago

    I want to know how Andrewsarchus evolved into sheep and goats, please!

  • Steve Okay
    Steve Okay   3 months ago

    I'm totally going to recommend the book "The Oceans of Kansas" , by Michael Everhart, curator at the Sternberg Museum as a great book followup to this video.

  • jake saenz
    jake saenz   3 months ago

    i live in texas and i find seashells in my backyard

  • DMB fan
    DMB fan   3 months ago

    Minnesota has a state park that you can dig for fossils, found a shark tooth there.

  • Veggieboy Ultimate
    Veggieboy Ultimate   3 months ago

    Niche partitioning could be seen in YouTube, trying to make videos that does not have same content or else your channel will be deleted. Quite a similarity here huh?

  • Gloria McClamma
    Gloria McClamma   3 months ago

    I want to know how Andrewsarchus evolved into sheep and goats.

  • Elise V.
    Elise V.   4 months ago

    her voice is triggering my flight or fight response