Mosasaurs, giant marine reptiles that existed more than 66 million years ago, lived not only in the sea but also in rivers. This is shown by new research based on analyses of a mosasaur tooth found in ...
Interesting Engineering on MSN
Bus-sized sea reptile roamed North Dakota rivers about 66 million years ago
Some 66 million years ago, a city bus-sized terrifying predator prowled a prehistoric river in what is now North Dakota. This ...
Islands on MSN
Nestled on South Dakota's Missouri River are camping, fishing, and trails in an outdoor paradise
Not only is this a place to soak up a gritty adventure in natural splendor, but you can also walk some of the same paths once ...
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