Question

theories pertaining to distribution of animals​

Answer 1

Theory of continental drift and existence of corridors and filter bridges between two land masses also explain distribution of animals and have been dealt with earlier. In addition to these the following theories explain the distribution of plants and animals across continents..

Answer 2

Age and area theory of Willis.

This means that widely distributed species are older as they should have taken long time to spread to such distant places and the endemic species must be young. ... This theory presumes that all species spread at the same slow rate and at all time in the history of evolution.