I love this galactic orbit measure of things. Dinosaurs like the Iguanadon were alive ~125mya, which means that the impressive thing when looking at a fossil is not that it's old, it's that it came from the other side of the galaxy. You can go and pick up a trilobite that's coming up to its third orbit.

Yes, I know, it's still from Earth, but I do think it's a weird way of looking at dinosaur fossils.

More other-side-of-the-galaxy dinosaurs:

http://www.enchantedlearning.com/subjects/dinosaurs/mesozoic...