When Sharks Swam the Great How a Supervolcano Made the Cenozoic’s Coolest 5 months ago   12:41

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PBS Eons
Check out Origin of Everything: https://ai-tube.com/userchannel/HPvO8u9wQ2Zykk96MSaTQFWj

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

If you'd like to support the channel, head over to http://patreon.com/eons and pledge for some cool rewards!

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References:
Oceans of Kansas: A Natural History of the Western Interior Seaway (Second Edition) by Michael J. Everhart.
https://www.tandfonline.com/doi/abs/10.1080/02724634.2014.838573?journalCode=ujvp20#.U8BQ-61OURY
https://www.researchgate.net/publication/259517413_Cretaceous_Eustasy_Revisited
https://www.researchgate.net/profile/Joshua_Slattery/publication/280641436_EARLY_CRETACEOUS_TO_PALEOCENE_PALEOGEOGRAPHY_OF_THE_WESTERN_INTERIOR_SEAWAY_THE_INTERACTION_OF_EUSTASY_AND_TECTONISM/links/55c0927208aed621de13c50d/EARLY-CRETACEOUS-TO-PALEOCENE-PALEOGEOGRAPHY-OF-THE-WESTERN-INTERIOR-SEAWAY-THE-INTERACTION-OF-EUSTASY-AND-TECTONISM.pdf
https://www.researchgate.net/publication/321632109_The_Late_Cretaceous_Western_Interior_Seaway_as_a_model_for_oxygenation_change_in_epicontinental_restricted_basins
https://www.tandfonline.com/doi/abs/10.1080/02724634.2011.601714
https://www.jstor.org/stable/1306568
https://www.sciencedirect.com/science/article/pii/003101829090110S
https://pubs.er.usgs.gov/publication/pp1561
http://rspb.royalsocietypublishing.org/content/278/1706/681.short
https://link.springer.com/article/10.1007%2FBF02990187
https://pubs.geoscienceworld.org/gsa/geology/article-abstract/44/11/903/195080/temperature-and-salinity-of-the-late-cretaceous?redirectedFrom=fulltext
https://www.rushcounty.org/PostRockMuseum/PostRockMuseum2.htm

Comments 982 Comments

TheOneWhoMightBe
That Tylosaurus is the stuff of nightmares.
Hannah Rachel Horinek
I work at the Sternberg Museum in the paleo collections and my coworkers and I had NO idea about this video until now 😂😅 idk how I missed it in my sub feed all these months!!!
Honey Bhosle
Tylosaurus is fine but what about that Tattoo
Shawn Dickmann
Still the prettiest woman in science, hands down.
Choryllis
So there really was a Northwest Passage. We were just about 60 to 90 million years too late XD
thebas3rd
Smart and cute, I wanna see that tattoo you have on your left shoulder 😍
Tessa Seren
Does anybody know where she got her shirt? I neeeeed it.
rockettony101
I live in iowa and we learned about this in both science and history class. to this day i still find small ocean fossils in rocks when i'm flint knapping
Rashada Akter
Marine mammals pls.....
Akuma
wasn't the short neck ones pliosaurs?
Hunter Scheib
Way to go Hays, 'MURICA! Knowledge for days! Grew up obsessed with the Sternberg Museum.
Ms. RMoreno
Haha I lived in Laramie and now I’m in laramedia
E. Caban Jr
That was an outstanding presentation! Thank you! I would like to hear about about the earth's spin axis shifts and the extent of it's effects on changing sea levels. Especially how that correlated with onset of the different archaeological time periods.
kamakazi008
Uhh sorry but the earth is only 6000 years old, all of you people will burn in hell
navarad phonethibsavads
I'd love to learn about prehistoric predatory plants
Harrison Loch
When I was younger, fossil hunting was a big hobby of mine. I'm from Minnesota, and all the fossils I found were shells or other sea dwellers. Even found a Cephalopod, whose shell was in excess of 5 feet, in a stone quarry.
Brian Starkey
Hey I’m from Oklahoma and in the southern part of the state there’s a mountain range called the arbuckles I heard someone say there some of the oldest mountains on earth were they islands or did I here them wrong
Thesmokeeffect
Goddamn meters
iam Negan
What's that at 5:40
Eddie Meow
How can we have the golfo of mexico and dinorous at the same time?
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How a Supervolcano Made the Cenozoic’s Coolest When Sharks Swam the Great 5 months ago   09:39

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One of the most dynamic, transformative, and potentially dangerous features in North America is also responsible for some of the continent’s most amazing fossil deposits. It’s a supervolcano we now call Yellowstone.

Thanks to Rick Otto and the Ashfall Fossil Beds State Historical Park for their help with this episode!

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, Aldo Espinosa Zúñiga, Kelby Reid, Steph Summerfield, Todd Dittman, Betsy Radley, Svetlana Pylaeva, Colin Sylvester, Philip Slingerland, John Vanek, Jose Garcia, Noah offitzer, Eric Vonk, Tony Wamsley, Henrik Peteri, Jonathan Wright, Wilco Verweij, Jon Monteiro, James Bording, Brad Nicholls, Miles Chaston, Michael McClellan, Elysha Nygård, Jeff Graham, Maria Humphrey, Nathan Paskett, Connor Jensen, Ehit Dinesh Agarwal, Sapjes, Daisuke Goto, Zachary Winkler, Hubert Rady, Yuntao Zhou, Gregory Kintz, Tyson Cleary, Chandler Bass, Maly Lor, Joao Ascensao, Tsee Lee, Sarah Fritts, Ruben Winter, Ron Harvey Jr, Joshua Mitchell, Johnny Li, Jacob Gerke, Katie M Vasilescu, Brandon Burke, Alex Yan

If you'd like to support the channel, head over to http://patreon.com/eons and pledge for some cool rewards!

Want to follow Eons elsewhere on the internet?
Facebook - https://www.facebook.com/eonsshow
Twitter - https://twitter.com/eonsshow
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References:
https://www.researchgate.net/publication/300919200_The_geology_and_paleontology_of_Ashfall_Fossil_Beds_a_late_Miocene_Clarendonian_mass-death_assemblage_Antelope_County_and_adjacent_Knox_County_Nebraska_USA
https://www.journals.uchicago.edu/doi/10.1086/587650
https://www.ncbi.nlm.nih.gov/pubmed/14711425
https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2013JB010483
https://www.ncbi.nlm.nih.gov/pubmed/1684053
https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/92GL00703
https://volcanoes.usgs.gov/volcanoes/yellowstone/yellowstone_sub_page_54.html
https://www.floridamuseum.ufl.edu/files/1013/9447/0047/bulletin-Mihlbachlerlowres.pdf
https://peerj.com/articles/4880/
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0044205
https://www.scientificamerican.com/article/the-secrets-of-supervolca-2006-06/
https://link.springer.com/article/10.1007/s00445-007-0140-7
https://pubs.er.usgs.gov/publication/70117448
https://www.frontiersin.org/articles/120148
https://www.researchgate.net/publication/280296629_An_introduction_to_the_stratigraphy_structural_geology_and_hydrogeology_of_the_Columbia_River_Flood-Basalt_Province_A_primer_for_the_GSA_Columbia_River_Basalt_Group_field_trips
http://volcano.oregonstate.edu/columbia-river-flood-basalts
https://www.researchgate.net/publication/298429576_Volcanic_Ash_Layers_in_the_Miocene_Lake_Clarkia_Beds_Geochemistry_Regional_Correlation_and_Age_of_the_Clarkia_Flora
https://pubs.geoscienceworld.org/gsa/gsabulletin/article/62/8/907/4450/mold-of-a-rhinoceros-in-basalt-lower-grand-coulee
Mustoe, George. “Washington’s Fossil Forests.” 2001
http://www.dnr.wa.gov/Publications/ger_washington_geology_1988_v16_no4.pdf