Description: specifications：52*5mm weight：g DescriptionThe subclass Ammonoidia (scientific name: Ammonoidia) is a collective name for a group of extinct marine organisms that lived from the Middle Ordovician to the Late Cretaceous. It is named for its surface, which usually has lines similar to chrysanthemums. The ammonite fossils are very suitable as standard fossils, and geologists can use them to determine the age of the stratum containing the ammonite fossils. The closest relationship between ammonites and the existing cephalopods may be Octopus, rather than the Nautilales of Nautilus. The ammonites first appeared on Earth from the late Silurian to the early Devonian, and eventually disappeared with dinosaurs in the late Cretaceous.
Price: 29 USD
Location: nanyangshi
End Time: 2024-08-07T14:30:58.000Z
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