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Orthoceras fossils


Orthoceras Nautaloid. One single nautaloid marking on fossil marble carved to accentuate the original shape of the nautaloid.

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The name Orthoceras, means “straight horn” which refers to it’s characteristically long straight conical shell is a genus of extinct nautiloid cephalopod. These ancient orthoceras fossils, ancestors of the squid, ranged in size from less than a centimeter to more than a metre. The shape and segments of the shell that housed the soft body of the organism which resided in the shell opening segment, are a result of the creature constantly outgrowing its shell, resulting in a new shell segment larger than the one before. The shell is all that remains in the fossil record, and the distinctive segments with their divisions called septa can clearly be seen in the fossil markings.

sizing information: Approximately 12-16cm long x 3.5cm


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Additional information

Weight .175 kg
Dimensions 20 × 5 × 5 cm