Ammonites are extinct shelled marine animals that are related to octopus and squid. This Placenticeras meeki specimen lived in the late Cretaceous, about 71 million years ago. This specimen's iridescent red, blue, orange, and green colors are caused by the reflection of light from the layers of aragonite that compose the shell of this ammonite. Because of its similarity to opal, such ammonite shells are mined, cut, and polished under the gemstone name of "ammolite." This specimen comes from Albe

20K views · 332 reactions | Some 105 million years old ammonites from Charmouth I found today | Charmouth Fossils | Facebook

Here are two ammonites rocks that we found amongst the boulders and opened up with our hammer 🏝🌊 Inside both, a stunning dactylioceras ammonite from the Jurassic 😍🦑 This ammonite is around 185 Million Years Old 💀🦕 For more videos, check out our YouTube channel Yorkshire Fossils 🏝 Thanks for supporting our page! 🐊 #natural #nature #fossil #fossils #ancient #animals #art #ammonite #ammonites #dinosaur #scientist #minerals #paleontology #whitby #geologist #dorset #geology #charmouth #jurass