Large opalized Nautilus, set with a silver headband and Law .925 chain
This jewel of great size, flashes iridescent colors as the sun illuminates it. Fastened with a minivalist system to leave its natural shape in view of all. An incredible piece.
Nautilus opalized
Ammonites Temporal range: 400 Ma-66 Ma PreЄ
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OR
S
D
C
P
T
J
K
Pg
N
Devonian-CretaceousRecreation of an ammonite (Asteroceras).
Taxonomy Kingdom: Animalia Edge: Mollusca Class: Cephalopoda Subclass: Ammonoidea
Zittel, 1884Orders Order Ammonitida
- Ammonitin
- Acanthoceratin
- Ancyloceratin
- Phylloceratin
- Lytoceratin
Goniatitida Order
- Goniatitina
- Anarcestin
- Clymeniina
Order Ceratida
- Ceratitin
- Prolecanitin
[edit data on Wikidata]
Fossil shell of an ammonite (Amaltheus).
Ammonoids (Ammonoidea), commonly known as ammonites, 1 are a subclass of extinct cephalopod mollusks that existed in the seas from the Middle Devonian (about 400 million years ago) to the late Cretaceous (66 million years ago) 2 Thank you Due to their rapid evolution and worldwide distribution, they are excellent guide fossils for rock dating and have made possible the elaboration of biozone successions of great biostratigraphic precision.