20303 - Cut & Polished 5.37 Inch Cleoniceras sp Lower Cretaceous Ammonite Madagascar - Agatized Aragonite Phosphate turtles belong to the

Phosphate turtles belong to the two major groups of extant turtles: Pleurodira

very difficult to find

we have the complete skull

This is from the levels with Ampyx and Agerina

Unpublished

20303 - Cut & Polished 5.37 Inch Cleoniceras sp Lower Cretaceous Ammonite Madagascar - Agatized Aragonite Phosphate turtles belong to theCleoniceras 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