Ok, I know why dilos drop this skin. Remember in Jurassic park, were the dilophosaurus killed Dennis nedry? Well, at that time, Dennis nedry had his glasses. But idk (I think this is a little dumb) that the game calls them nerdry glasses, not nedry glasses.
The Dilophosaurus killed Nedry and then they got his glasses and then found spare glasses.Some Dilophosaurs actually have a sunglass on them.In jurrasic park they wandered so far later then they survived a Megalodon attack and swam ashore meeting a player.The player died shortly and his remains were just a body and a few gear.At first it seemed easy until a giant Tyrannosaur came.Now they changed and run away when they feel dizzy.They became slightly less aggressive and weaker with more spikes. Very strange if you ask me.