Wholesale: 5Kg Bumpy Ammonite (Douvilleiceras) Fossils - 23 pieces

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This is a wholesale lot of 23 Douvilleiceras ammonites weighing 5kg from the Upper Cretaceous of Madagascar. They range in size from 2.8 - 3.9". This genus of ammonites has earned the local name "Tractor Ammonites", due to their distinctively bumpy surface and pronounced ridges making them resemble a tractor tire.

Ammonites are an extinct group of marine invertebrate animals which died out at the end of the Cretaceous period. These mollusks are more closely related to living coleoids (i.e. octopuses, squid, and cuttlefish) than they are to shelled nautiloids such as the living Nautilus species.
Douvilleiceras mammilatum
Mahajanga Province, Madagascar
2.8 - 3.9"