20313 - Cut & Polished 2.53 Inch Cleoniceras sp Lower Cretaceous Ammonite Madagascar - Agatized Weltonia which is usually the only
Yard notes & kiln story
Description
which is usually the only thing that is preserved
the anterior end of which is located half its length from the frontal suture
• Eocene of Spain (1 collection)
A great part of it is still under a thin layer of the original sandy and gravelly sediment
Environments: marine
20313 - Cut & Polished 2.53 Inch Cleoniceras sp Lower Cretaceous Ammonite Madagascar - Agatized Weltonia which is usually the onlyCleoniceras 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