Is there an easy way to tell apart fossils from Solnhofen or Lebanon?

[DardS8Br]

The fossils from these two places look remarkably similar. If I'm looking at a shrimp fossil for example, is there an easy to identify which location it's from? 

[Ludwigia]

As far as I know, although the matrix is quite similar, the Solnhofen fossils are Late Jurassic and the Lebanese are Late Cretaceous, so the faunal species should differ. But any reliable dealer should be able to tell you himself, right?