Ammonite Shell Collection 1. Lytocerotina a grand order of Cretaceous ammonitea Lytocerotina are usually circular and have vibrate shells in which the grooved element has a multitude of vein like sub growths. 2. Cretaceous 3. C Lytocerotina 4.  Cretaceous ammonitea There are 171 species of Cretaceous ammonitea, I could only find one reference online for Lytocerotina which was […]

Ammonoidea Information from Wikipedia: Ammonoids are an extinct group of marine mollusc animals in the subclass Ammonoidea of the class Cephalopoda. These molluscs are more closely related to living coleoids (i.e., octopuses, squid, and cuttlefish) than they are to shelled nautiloids such as the living Nautilus species. The earliest ammonites appear during the Devonian, and […]

Pi Pi Shells 1. Ancylocerapina The Ancylocerapina were a coretra suborder of ammonitea, evidently related to the sub-order Lypouatina Fig Y Half Shell Fig X Open Sleeve Fig Z Innards Cavity 2. Fig Y Half Shell 3. Fig X Open Sleeve 4. Fig Z Innards Cavity Information from Wikipedia: Paphies australis or pipi (from the […]