[Junior]

Punctuated equillibrium explains such jumps (species separates from parent and evolves quickly. Returns to the fold and replaces parent species.)

"Quickly" still refers to several thousand or tens of thousands of generations, though.

[DittoJed2]

I don't care how many generations it hypothesizes. What it says is that classical Darwinianism did not deliver on the answers to an evolutionary scientist's questions, did not show what it promised, so this fellow (or fellows) had to come up with a revised theory to try to explain the record.