Ammonite Fibonacci T-shirt Size:L 12" polished Cleoniceras fossil from

12" polished Cleoniceras fossil from Madagascar

sometimes forming tiny planetoids

The approximate size is 2 cm wide by 1 cm tall (e

small Apollo 11 Jewelry Card

such as this piece

Ammonite Fibonacci T-shirt Size:L 12" polished Cleoniceras fossil fromAmmonites were incredible sea creatures that first entered the fossil record 400 million years ago. They survived several mass extinction events, including the PermianTriassic "Great Dying" which wiped out 96% of all marine species. They finally succumbed during the Cretaceous Paleogene extinction event 66 million years ago, which also wiped out the dinosaurs. The size of ammonite shells range from sub centimeter dwarf species to giants nearly three