LK Ammonite Cleoniceras IF-MA-16-005 Jurassic 7 short tons)

7 short tons)

5 inches and is ½ inch thick

It's diagonal measurement is 5 5/8 inches

Also present is a significant portion of the preserved keel

This is a 1 in a thousand specimen because of the preserved features that are seldom seen in other specimens

LK Ammonite Cleoniceras IF-MA-16-005 Jurassic 7 short tons)Cleoniceras besairiei Lower Cretaceous (Albian) Mahajanga Basin Madagascar Here is an outstanding example of C. besairiei with the original shell removed to reveal a really detailed suture pattern. This specimen is a complete phragmocone with a small portion of the living chamber. Most examples from these localities are sanded and polished to such an extent that the original aragonite shell is removed and often the detail of the suture pattern is