Vertebrate palaeontologists are people unnaturally obsessed with old bones. They should not be confused with geologists or archaeologists, and are distinguished by complete lack of knowledge of anything outside their very small area of expertise. Every vertebrate palaeontologist is the world's leading expert - in fact, the only expert - in their particular field, which means that they can write anything they like in the knowledge that nobody else knows anything which can prove that they are wrong.