Cyrtoneritimorpha

Cyrtoneritimorpha, also Cyrtoneritida,^[2] is a clade of fossil sea snails, marine gastropod mollusks within the clade Neritimorpha.

Cyrtoneritimorpha Temporal range: Early Ordovician–Late Permian[1] PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Neritimorpha
Clade:	†Cyrtoneritimorpha
Families
Orthonychiidae Vltaviellidae

This order contains two extinct families: Orthonychiidae and Vltaviellidae.