re: Exomars: the link to the article
Ok, but will they dig.
True, Mars hasn't had a tectonic active life as we've had on Earth, but life-bearing rocks aren't easy to find on the surface of Mars because at present Mars cannot sustain life on it's surface.
Will they be digging? If so, they'll have a greater chance of finding fossils or even microbial life. I'm talking to the scope of core samples here. Mars has had MANY dust storms since it's dynamo died.