MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY
This famous geological site in Provence, France, a massive, 350 square metre slab of Lower Jurassic limestone, is a sea bed tilted up at 60 degrees and covered with thousands of fossil specimens. About 1550, are the spiral shells of one type of creature, ammonites, a species long extinct, a cephalopod related to squid and cuttlefish. Coroniceras multicostatum, with the largest around 70 cm in diameter. The deposit is 20 cm thick and took 100, 000 years to be laid down and harden into rock.
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