rhinoceroses will become extinct leaving the niche of large armored herbivores vacant. this niche will be occupied by the warthogs who will develop real horns starting from fangs. they will have great success being able to expand in all the world thanks to the great bridges of land that will be formed between the continents between over 20 million years from now. this group will be the last of the armored mammals. they will live and spread up to 45 million years in the future when they become extinct along with many other groups of mammals due to the fall of an asteroid and various other geological upheavals.