Ordovician Erfoud, Morocco Composed of black fossil-bearing marble, this is an exceptional orthoceras plaque, both for its overall size and the dimensions of the large complete specimen situated in the center, which measures nearly 60 inches in length. Orthoceras, meaning “straight horn”, was an extinct cephalopod related to today’s squid and chambered nautilus. A gregarious, colonial creature—this plaque bears testimony to a geological event that caused the sudden death of a large number of individuals—known as a “mass mortality”. Each specimen is polished to reveal the fine detail of the chambers. Measuring 48 x 74 x 1in
Ordovician Erfoud, Morocco Composed of black fossil-bearing marble, this is an exceptional orthoceras plaque, both for its overall size and the dimensions of the large complete specimen situated in the center, which measures nearly 60 inches in length. Orthoceras, meaning “straight horn”, was an extinct cephalopod related to today’s squid and chambered nautilus. A gregarious, colonial creature—this plaque bears testimony to a geological event that caused the sudden death of a large number of individuals—known as a “mass mortality”. Each specimen is polished to reveal the fine detail of the chambers. Measuring 48 x 74 x 1in
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.jpg "Source: Christie's")
.jpg "Source: Christie's")
.jpg "Source: Christie's")
.jpg "Source: Christie's")
