Montana In The Geologic Past

Now, nearly 50 years after the first book, Mountain Press is releasing this completely revised full-color second edition that, like so many things in Montana, is big. But consider this: no other place in the world has such amazingly diverse and well-exposed rocks with such dramatic stories.

Additional title page description: Stratigraphic, paleontologic, and radiometric data are combined to determine the paleogeography for a part of the upper Upper Cretaceous.