Perhaps the amphibians that were most well adapted to a land-living existence were the cacopids. These evolved quite late in the Permian and did not die out until the succeeding Triassic period. Cacops was the most typical genus of this family. There have even been trackways found that have been referred to Cacops. It may have been a nocturnal animal like most modern frogs.(walking dinosaur costume)
Features: Bony plates cover the body and there is a row of thick armour plates down the backbone. The egs are well adapted for walking and are almost like those of reptiles. A notch at the rear of the skull would have supported an eardrum in life, showing a sensitivity to airborne sounds – as opposed to the other main hearing mechanism of amphibians involving detecting ground-borne sounds through the jaw bone on the ground.
Below: The bony plates on the body may have been for protection, against other big land-living amphibians, or to prevent water loss in the dryness and heat of the environment. (animatronic dinosaur)
New environments – New Life
As the Carboniferoust slipped into the Permian, a number of changes took place in the world’s geography. For one thing, an ice age gripped the southern continents. The evidence for this can be found in South Africa, India. Australia and South America as well as Antarctica. This reached its most intense in the early Permian and then the glaciers died away gradually.
In addition the continents of the globe were moving together and beginning to assemble into the supercontinent of Pangaea, crushing up mountain ranges in between.
These events meant that the environments were changing. The loss of shallow seas meant that the coal swamps were drying up. and deserts spread everywhere across the vast landmass. producing such dry-land sediments as the Texas Red Beds. The only places that were comfortable for life were the coastal regions.
New plants evolved. One of the most common was a kind of fern that reproduced by a seed. This was called Glossopferis, and became the most abundant plant on the southern continent. It became the main food for the land-living insects and invertebrates, and these, in turn, became prey for the land-living amphibians and newly evolved reptiles.