(via PBS Eons) Long before the rise of the great whites and hammerheads we know today, sharks and their cartilaginous relatives ruled Earth’s oceans and rivers in astonishing variety. It was the ...
(via PBS Eons) The Cretaceous Resinous Interval, a 54-million year period where amber was preserved in hundreds of locations across the world, was a gooey, gummy point in Earth's history - and then ...
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