Listing is for 1 (ONE) WHOLE Ammonite Fossil (RK24B31) YOU CHOOSE the size you want! under 50 grams 51-100 grams 101-150 grams 151-200 grams Here is your chance to own ammonites. They range in size from approximately .75"to 3" & 10 rams to 200 grams.The colors in these vary from browns, black, golden, white, pearl looking, & tan. All of these fossils are amazing. Would look great incorporated into jewelry, mosaics, artwork, or just set out on the coffee table. Ammonites are sea creatures that belong to a group know as the cephalopods. Their closest living relatives are squid, octopus, & nautilus. They lived & became extinct at the same time as the dinosaurs, 240-65 million years ago! STOCK PHOTO. Each ammonite will vary slightly in size & characteristics. Thank you for looking Have a great day. Nautilus Fossil | Cretaceous Nautiloid - Beautiful Collectible Polished Whole Ammonite Fossil- By Weight | Rk24B31