What does "neoammonite" mean?

Any ammonite (Ammonoidea) of the Jurassic period, descended from Psiloceras, the sole surviving ammonite genus of the Triassic–Jurassic extinction event.

Neoammonite

noun

noun ·Rare ·Advanced level

Definitions

Noun

1
Any ammonite (Ammonoidea) of the Jurassic period, descended from Psiloceras, the sole surviving ammonite genus of the Triassic–Jurassic extinction event.

Etymology

From neo- + ammonite.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.