Two Tiny Claws, by Brett Davis "Old Fossils Never Die..." Ok Not the deepest thing I've ever read, but I love rip roaring Science Fiction.

ISBN 0-671-57785-9

Not an alternative history. Rather an alternative view of history as we know it. This is a view of the Great Fossil Rush... Hell Creek Formation, Montana 1907. How real is this? Got me beat. I just enjoy it.