20307 - Nice Agatized 1.57 Inch Cleoniceras sp Lower Cretaceous Ammonite Madagascar
20307 - Nice Agatized 1.57 Inch Cleoniceras sp Lower Cretaceous Ammonite Madagascar 20307 - Nice Agatized 1.57 Inch Cleoniceras sp Lower Cretaceous Ammonite Madagascar 20307 - Nice Agatized 1.57 Inch Cleoniceras sp Lower Cretaceous Ammonite Madagascar 20307 - Nice Agatized 1.57 Inch Cleoniceras sp Lower Cretaceous Ammonite Madagascar

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20307 - Nice Agatized 1.57 Inch Cleoniceras sp Lower Cretaceous Ammonite Madagascar

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Species
Cleoniceras sp, Parona and Bonarelli (1897) - Ammonite
Age
Lower Cretaceous, Albian stage (~110 Million Years)
Location
Ambatolafia, Mahajanga Province, Madagascar
Formation
Mahajanga Province Albian outcrops
Size
39.8 mm   •    in
Weight
17 g   •    oz
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Description
Cleoniceras sp, Parona and Bonarelli 1897 (ammonite)
Cephalopoda - Ammonitida - Cleoniceratidae
Cleoniceras is a rather involute, high-whorled hoplitid from the Lower to basal Middle Albian of Europe, Madagascar, and Transcaspian region. The shell has a generally small umbilicus, arched to acute venter, and typically at some growth stage, falcoid ribs that spring in pairs from umbilical tubercles, usually disappearing on the outer whorls.
These ammonites present an impressive mineralization. The mineralization is produced in agate, with beautiful iridescent tones typical of this variety of quartz. This specimen, under the shell shows its precious structure of the suture lines.
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