So the common earthworm, while usually much smaller, can grow to be 35cm. And from a quick search, the giant Oregon earthworm can grow to be 1.5 meters.

So between the disappointment in the size of 'giant' and the age vs fossil age, this is a pretty big let down of a title.

Now maybe I'm a bit of an idiot for even a second believing any creature could be hundreds of millions of years old - but in the flip side once you take away both of those qualifiers (giant and old) there isn't much story here to be much interest. Or at least not to me.