What is so important about the cumberland bone when it comes to the question of uniformitarianism vs catastrophism?

It is so important because of the different animals from places on earth are all together in one place it give a good evidence of world wide flood.

Catastrophism is the idea that now the World has been greatly influenced by abrupt, short-lived, horrific events, probably of magnitude worldwide. This compares with uniformitarianism (sometimes defined as gradualism), in which slow incremental changes, such as erosion, produced all the geological features of the Earth.