We’ve all heard of the fearsome megalodon, the largest known shark to have ever lived, but how about its predecessors, contemporaries and successors? Shark Week premiere “Jurassic Sharks” uses CGI to flesh out the fossils of ancient cartilaginous fish, and Live Science is here with all the TV and streaming details.

Using fossil records and “cutting-edge” visual effects, “Jurassic Sharks” will attempt to trace the ancestry of modern-day species back through millions of years, and build a picture of the prehistoric ocean, complete with superpredators that are both weird and awe-inspiring.

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