20867 - Nice Agatized & Polished 5.44 Inch Cleoniceras sp Lower Cretaceous Ammonite Madagascar Onchopristis Bones both in its outer shell

both in its outer shell and in its chambers and internal structure

See also Bruton 1966

Type: Cyrtoceratites arduennensis

It has small fractures that have been glued

-Eremiasaurus heterodontus (LeBlanc et al

20867 - Nice Agatized & Polished 5.44 Inch Cleoniceras sp Lower Cretaceous Ammonite Madagascar Onchopristis Bones both in its outer shellCleoniceras 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