explain why the brachiopods lived on species and shallower waters underwent mass extinction. but first stephanie keel has to prove that brachiopods also fed off methane here in the alps. that he collects samples to examine the land the creatures left their mark here with their limestone shells and their secretions researcher hopes to have solved the mystery in a few months time. and there are probably a number of other unknown ecosystems to be uncovered in the outs each contributing its own chapter to the story of how the mountain range was born. every who supplies travel thousands of kilometers today when to go it is except for the basing of wings. in contrast to that migration. in germany sent in