Most of Fort McMurray Wood Buffalo’s history was underwater. For millions of years, it was the Western Interior Seaway
A section of a fossilized tail from a plesiosaur, a marine reptile that lived 115 million years ago, is removed from Syncrude Mildred Lake site after it was discovered on March 12, 2023.The closest shoreline from what would become Fort McMurray was somewhere around the Alberta-Saskatchewan border. On land, temperatures were like the coast of Vancouver Island. The environment was forested, warmer and covered in ferns. There were no flowering plants and grass did not exist.
While plesiosaurs shared the Earth with dinosaurs, they are considered marine reptiles. Paleontologists believe the plesiosaur died in the inland sea and washed into shallow waters. The carcass was likely scavenged by predators, including dinosaurs.Article content “This presents very unusual preservation conditions,” Henderson said in a statement. “It’s so rare for things to become fossils, especially big things such as marine reptiles and dinosaurs. It’s only the fact that we’re shifting so much rock here that we’re fortunate to see this small piece of fossil.”
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