The great extinctions in geologic history

What's notable about that story is its typical evolutionist commitment to leaving out the evidence and giving only the totally speculative imaginative interpretation. Such and such happened you see. Not a bit of data. Nothing about the fact that this complete imaginative scenario about supposed great extinctions was concocted on the basis of bits of minerals found in the geologic column here and there and an absence of fossils that evo theory would expect to have been there. The best that can be said for it is that it does mention that there are other interpretations. But not a bit of data is provided for the sake of the hapless reader who is required to take the interpretation completely on faith.