earthstory:Heteromorph Ammonites: When Mother Nature got CreativeAmmonites are well known througho
earthstory: Heteromorph Ammonites: When Mother Nature got CreativeAmmonites are well known throughout the world and are a prized find for any level of fossil hunter. We are all well acquainted with the spiral shells (homomorphs) that can commonly be found within Jurassic and Cretaceous rocks. However, during the Cretaceous ammonites started to branch out and a series of weird and wonderful shell shapes appeared. Keep reading -- source link
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