“One fossil, dating back 315 million years, revealed a tenaculum connected to the upper jaw that carried teeth..." "We have a combination of experimental data with paleontological evidence to show how these fishes co-opted a preexisting program for manufacturing teeth to make a new device that is
essential for reproduction.” "showcasing evolutionary flexibility."
So teeth "essential for reproduction' developed over millions (?) of years, thus explaining how they reproduced over millions of years.
Perfectly logical. Given enough time, such evolutionists can develop of form of logic essential for supporting this.