Is There a Global Flood?

The biblical text does not suggest this. It doesn't mention anything about it. If you want to propose such miracles, you can do that, but it isn't the evidence available from the reason perspective that's driving your proposal. The scientific evidence is that their most recent common ancestor lived about ten point eight million years ago. And that somethin we know based on paleontological and genetic evidence,. because we can estimate how long ago two species diverged by how different their d and a is.