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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.
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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
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