Scientific evidence for any fine tuning?

[beaglelady]

@Paraleptopecten

That’s a little outdated (maybe 20 years). There are five really big ones with enough data to be obvious: the Precambrian ones are speculative, the Cambrian ones were only recognized within the last five years, and the end Cenomanian one blurs into the P-T boundary.

The American Museum of Natural History lists 5 major ones. I’m sure there were smaller ones. I’m also pretty sure we’re in the middle of one.