300 Foxes and a Donkey's Jawbone
"Origin of reptiles, diversification of amphibians. Insects abundant." Here we can see how doublespeak is used to establish the premise that the evolution narrative envisions the development from simple to complex.
Amphibians were buried in a swamp. Does that mean that amphibians were spreading? No, it doesn't, it means that amphibians lived in the swamp that got buried. It's popular science inductive doublespeak (SciPop).
We (me and the Holy spirit) can't avoid the obvious conclusion that Mississippian sediments are the remains of an ecosystem which was buried in a flood.