Comparitive anatomy because you are studying two cats
The answer is 'cooler'. The Cretaceous Period was relatively warm and was experiencing global warming. However, a cooling trend was evident towards the end of the Cretaceous. The Paleocene followed the meteorite impact that resulted in the extinction of most of the dinosaurs. It is thought that dust particles in the atmosphere resulted in cooling during the early Paleocene.
The first serious attack on the idea of spontaneous generation<span> was made in 1668 by Francesco Redi, an Italian physician and poet. At that time, it was widely held that maggots arose </span>spontaneously<span> in rotting meat. Redi believed that maggots developed from eggs laid by flies.</span>