Tuatara is probably the closest thing to dinosaurs you can still see roaming the Earth. Scientists sometimes refer to them as ‘living dinosaurs’ because of their similarity to the giant lizards that once populated our planet. Being almost 220 million years old, they really haven’t changed much during the course of history. This un-evolved species can be found in a number of islands around New Zealand and sometimes on the mainland as well.
You don’t need to know the exact age of tadpole shrimps to see that these creatures are prehistoric. They just have this weird ‘ancient’ look that can’t be confused with something else. Tadpole shrimps (also called ‘shield’ shrimps because of their look) develop quickly from an egg into an adult and it takes them mere three weeks to grow up. It’s easy to see how they’ve survived for 250 million years, outliving dinosaurs and other big prehistoric creatures.