“

There are huge biases in the fossil record due to a number of factors (mainly geographical and economical, but also more personal biases like palaeontologists focusing on looking for one species for example, like Tyrannosaurus), the fact that multiple groups of scientists working on the exact same question at the same time can come up with completely opposite results further enforces this, that there is a great need for further data collection, i.e. digging up more dinosaurs and finding out where they lived and how successful they truly were.