New research reveals more about an ancient predator—including that it may have produced venom.
, their anatomy does suggest certain feeding strategies., an enormous mosasaur species, were the “meanest-looking animals that ever lived,” she said, with “huge conical teeth with serrations on both sides and built-in bony ridges above their eyes. They’re the ones that we most often find with plesiosaurs and mosasaurs and other large vertebrates inside of them.
And this, she explained further, has implications for the venomous lizard family tree called toxicoferans, and it includes snakes, monitor lizards, gila monsters, and now iguanas. “They all,” she said, “share a common ancestor, and what that means is that the ancestor to this group probably was venomous.” That’s significant, she explained, because “even if mosasaurs weren’t using venom to kill things, it’s possible that, like iguanas, it was present but vestigial.
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