Rhymmoceratidae is one of six families of the Neoglyphioceratoidea superfamily. They are an extinct group of ammonoid, which are shelled cephalopods related to squids, belemnites, octopuses, and cuttlefish, and more distantly to the nautiloids.

Rhymmoceratidae
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Ammonoidea
Order: Goniatitida
Superfamily: Neoglyphioceratoidea
Family: Rhymmoceratidae
Ruzhencev, 1957
Genera

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