Now think of the second-most massive dinosaur ever they just found in Egypt. It's front legs were about that long. It's not the first time it's happened. For some reason, we all want to believe, because we all want THE answers to what happened in our past. Too Many Asteroids Face it.
Earth is a sitting duck as an asteroid target.
We always were and always will be. And that no doubt explains why scientists keep finding evidence of asteroid strikes in the weirdest places. When it's a dinosaur from Madagascar. This bizarre, dog-sized predator date to the late Cretaceous, so it just came onboard before the big guys bit the dust. Here's a neat site that lists some of the best and just who owns them.