Ammonoidea
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Ammonoids are a group o extinct marine mollusc ainimals in the subclass Ammonoidea o the cless Cephalopoda. Thir molluscs, commonly referred tae as ammonites, are mair closely related tae leevin coleoids (i.e., octopuses, ink-fish, an cuttlefish) nor thay are tae shelled nautiloids sic as the leevin Nautilus species.[1] The earliest ammonites appear in the Devonian, an the last speshies dee'd oot in the Cretaceous–Paleogene extinction event.
| Ammonoidea | |
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| Artist's reconstruction o Asteroceras | |
Scientific classification 
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| Kinrick: | Animalia |
| Phylum: | Mollusca |
| Cless: | Cephalopoda |
| Subcless: | †Ammonoidea Zittel, 1884 |
| Orders | |
References
eedit- ↑ Klug, Christian; Kröger, Björn; Vinther, Jakob; Fuchs, Dirk (August 2015). "Ancestry, Origin and Early Evolution of Ammonoids". In Christian Klug; Dieter Korn; Kenneth De Baets; Isabelle Kruta; Royal H. Mapes (eds.). Ammonoid Paleobiology: From macroevolution to paleogeography. Topics in Geobiology 44. Springer. p. 3-24. doi:10.1007/978-94-017-9633-0_1.
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