This is the position, held by many thoughtful scientists, that a great water catastrophe occurred at some earlier time, which devastated the earth and produced our present geologic, geographic, and climatic conditions. Take a drive through the mountains, and you will see, beside the road, slanted, twisted rock strata where the road builders have cut into it. Within that strata is to be found billions of fossils. It is of interest that most of the carbon in our world is locked within the fossils in the sedimentary strata. Yet extinction is not evolution.
Evolution is the process by which one species changes into another species.
Yet the truth is that the Flood, as it rose, first covered and buried the slowest moving species, later the slower mammals, and finally the quicker ones. It all happened within a fairly short time. Yet even the smallest creatures in the lowest strata are extremely complex. This is a terrible blow to the evolutionists, who cannot explain it. In the lowest strata, the Cambrian, there are over a thousand different species, and below that there are next to none.