Now something bigger

Let's just jump to the biggest raptorial tetrapod in one go. When that's done I'm going to do some more peacefull prehistoric whales and after that we're going to take a jump further back in time.

In case you didn't know by now who this is: it's Livyatan melvillei.
It's a prehistoric sperm whale, the size of a modern sperm whale male. Its three meter long skull suggests the presence of a spermaceti organ, which means this predator had echo location to hunt the medium sized baleen whales that were common in its time. The teeth of Livyatan are the largest known to date: 36 cm (with the exception of tusks of elephants or walrusses, but those aren't used for eating).
Also fun to mention is that this whale lived together with Megalodon, the largest predator ever with which it ruled as the apex predator of the Miocene seas and oceans, roughly about 13 to 11 million years ago. The last place on earth where you'd want to take a swim. Ever.