that's true and withe icebrgs decreasing around the world the chance of it is slimming and a god chancehas mostly demolished but there could be some at the bottom of an ocean in part of te orlds coldest areas they could of tried to seek shelter in the ocean but over time it could offrozen ober and now they're stuck in a block of ice t the bottom of the ocean since we haven't traveled the full lengt of te planet yet there still is a small chance , and then the posibility of being able to clone dinos by related animals of this time like chickens or other animals.