fossilera:Ammonites are an extinct group of marine invertebrate animals which died out at the end of
fossilera:Ammonites are an extinct group of marine invertebrate animals which died out at the end of the Cretaceous period. These mollusks are more closely related to living coleoids (i.e. octopuses, squid, and cuttlefish) than they are to shelled nautiloids such as the living Nautilus species. Source: https://www.fossilera.com/fossils/6-polished-agatized-ammonite-cleoniceras-madagascar–10 -- source link
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