Fossil Ammonite pendant necklace. Quenstedtoceras ammonite from Saratov, southwestern Russia replaced with pyrite. This ammonite has a silvery black color. From Upper Callovian formation approximately 162 million years ago. The pendant is approximately 0.8 inches in length on black natural round leather. The necklace is adjustable from 16 to 32 inches by sliding the knots. 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, & cuttlefish) than they are to shelled nautiloids such as the living Nautilus species. The earliest ammonites appear during the Devonian, & the last species died out during the Cretaceous-Paleogene extinction event. The name “ammonite” was inspired by the spiral shape of their fossilized shells, which somewhat resemble tightly coiled rams’ horns. Pliny the Elder (d. 79 AD near Pompeii) called fossils of these animals ammonis cornua (“horns of Ammon”) because the Egyptian god Ammon (Amun) was typically depicted wearing ram’s horns. Often the name of an ammonite genus ends in -ceras, which is Greek (κέρας) for “horn”. Fossil Ammonite Pendant Adjustable Leather Necklace Handmade By Chris Hay
