3.4" Jurassic Cut & Polished Nautilus (Cymatoceras) Fossil -Madagascar

This is a 3.4" wide, Jurassic-aged nautilus (Cymatoceras sp.) fossil collected from the Morondava River Basin in the Tulear Province of Madagascar. The other nautiloids we get from Madagascar come from the Creteaceous deposits of Ambatalafia.

The nautilus was cut in half and polished revealing the inner chamber structure of this ancient marine animal. The exterior of the nautilus has also been polished. Both halves are included and each comes with a display stands.

The shell of a Nautilus is made up of two layers. The inner layer has the iridescent shine while the outer layer provides protection from external forces. Inside the shell are septa which divide the living area of the shell into compartments and help the animal maintain balance and position in the water column.

Nautilus are "living fossils" in that species similar to this one still exist in our oceans.
Cymatoceras sp.
Morondava River Basin, Tulear Province, Madagascar
3.4" wide
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