| I stage | II stage | III stage |
The rage of existing (I) or preferred (II, III) temperature | 0˚C - 28˚C | 28˚C - 32˚C | 34˚C - 36˚C |
Representatives among living groups | Tunicata, Acrania, Agnatha, Pisces, Amphibia | Reptilia | Dinosaurs |
Types of environment | They are tied to aquatic territories | They colonized marine, fresh-water and terrestrial territories | They were the first who expand to the air |