In Bucharest we have an entire subway station tiled with marble containing countless very visible fossils [1], specifically of rudists [2]. Here are a few nice

In Bucharest we have an entire subway station tiled with marble containing countless very visible fossils [1], specifically of rudists [2]. Here are a few nice photos: https://www.descopera.ro/wp-content/uploads/media/401/321/5946/15187502/3/politehnica-subway-station.jpg https://www.descopera.ro/wp-content/uploads/media/401/321/59... https://www.descopera.ro/wp-content/uploads/media/401/321/5946/15187502/2/politehnica-subway.jpg https://www.descopera.ro/wp-content/uploads/media/401/321/59... [1] https://en.m.wikipedia.org/wiki/Politehnica_metro_station https://en.m.wikipedia.org/wiki/Politehnica_metro_station [2] https://en.m.wikipedia.org/wiki/Rudists https://en.m.wikipedia.org/wiki/Rudists