tiltbillings wrote: Exactly, which means it is based upon what is measurable and observable and is open to being falsified. Science is doing science, not religion and religion is a poor basis for science.
Even today not all regions of Earth were explored, and not every creature discovered. Nothing to say about what creatures existed or didn't millions and billions of years ago.
What has happened millions to billions of years ago is not directly and 100% accurately observable today, nor is it fully replicable by scientists until they gain clairvoyance or have a time machine. Thus direct observation and replication of what has occurred and all beings that existed is impossible.