We have no idea when that transition happened, though, and if it is related to the impact. The time from when these animals lived in the Jurassic to the impact

We have no idea when that transition happened, though, and if it is related to the impact. The time from when these animals lived in the Jurassic to the impact at the end of the Cretaceous is considerably longer than the time from the impact until today, much could have happened inbewteen.