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| Flattened ammonoid with rostrum |
A thorny evolution: first Triassic ammonoid with a ventral apertural elongated rostrum
Arnaud Brayard, Emmanuel Fara, Nicolas Olivier, James F. Jenks, Kevin G. Bylund, Daniel A. Stephen, Noreen Kittrick, Emilie Steimetz, Gilles Escarguel Papers in Palaeontology, Vol. 12, Part 4, 2026























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