Hi
I feared this answer... The problem is simple:
Here in Bremen, Germany the harbor was not deep enough
and they removed alot of sand & stones from it. In a
area near the harbor they deposite that sediments.
There i find the fossil...

Flintstone in this ice age sediments (when i remember
right this city stands on a big sand dune build up in the
ice age) is not really uncommon - but it should not really
help to determinate the age when i understand it right.


>
> Where was it found?   There are silicified deposits
> throughout the geologic record, so it could be just about
> anywhere from the Ordovician to the Pleistocene.  Although
> the Cardioidea first appear in the Triassic, there are
> unrelated Paleozoic species with enough superficial
> resemblance to cardiids to have been called Cardium back
> in the 1800's.
>
>     Dr. David Campbell
>     Old Seashells
>     University of Alabama
>     Biodiversity & Systematics
>     Dept. Biological Sciences
>     Box 870345
>     Tuscaloosa, AL  35487-0345 USA
>     [log in to unmask]
>
> That is Uncle Joe, taken in the masonic regalia of a Grand
> Exalted Periwinkle of the Mystic Order of Whelks-P.G.
> Wodehouse, Romance at Droitgate Spa