Beautiful Rare Raimbow iridescent Ammonites with complete shell Free of Matrix - Cleoniceras sp. - 115×90×40 mm

Description
Beautiful Rare Raimbow iridescent Ammonites with complete shell Free of Matrix - Cleoniceras sp. - 115×90×40 mm
JURASSIC (145.0–201.3 million years) - Madagascar

1 - 95x70x28 162 g
2 - 55x45x15 36 g

Ammonoids are a group of extinct marine mollusc animals in the subclass Ammonoidea of the class Cephalopoda. These molluscs, commonly referred to as ammonites, 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.[1] The earliest ammonites appear during the Devonian, and the last species vanished in the Cretaceous–Paleogene extinction event.

Ammonites are excellent index fossils, and it is often possible to link the rock layer in which a particular species or genus is found to specific geologic time periods. Their fossil shells usually take the form of planispirals, although there were some helically spiraled and nonspiraled forms (known as heteromorphs).

Lot details
Object
Beautiful Rare Raimbow iridescent Ammonites with complete shell Free of Matrix
Scientific name
Cleoniceras sp.
Origin
Madagascar
Geological Period
JURASSIC (145.0–201.3 million years)
Condition
Good condition
Dimensions
115×90×40 mm
Weight
198 g
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