Do you have any informations about fossil-rich cherts from Scandinavia?
What you are looking for is information about the "Oslofeltet" (Oslo-field) in Norway (dated to be from the Ordovicium period, 443 - 488 million years old). This is a concentrated field of of fossils. There is a Sement museum ('cement') in a small place called Slemmestad where it is possible to view fossils from what was formerly an ocean bed. Geologicaly speaking, the entire area around Slemmestad is very interesting.