Hoppers In The Ice Age
Unique Snails hang on South of the Coastal Mountains
Hoppers, one-legged snails that occasionally hop across the ground at high speed have experienced hard times in the Ice Age.
As exothermic animals, their range has been restricted by the cooling climate compared to fellow derived mollusks the Terra Squids whose body temperature is on par with non-avian Dinosaurs (laughably higher than any other Spiralian) and can cope with colder temperatures.
Hoppers have seen their range limited to the central desert which is always hot and along the Coastal Lowlands where the temperature doesn't drop below freezing in winter. Well, the Desert Hopper and its kin still survive in their ancestral home all other species are descendants of the Rainforest Hopper, those that followed the forest south as the climate cooled.
Safely tucked behind the Coastal Mountains sparred from the cold winds of the north Hoppers continue along under the shadow of the planets Squid and Flying Fish rulers.