Cyrtoneritimorpha

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

Cyrtoneritimorpha is a clade of fossil sea snails, marine gastropod mollusks within the clade Neritimorpha.

This order contains two extinct families: Orthonychiidae and Vltaviellidae.

References

Frýda, J. (1999). Higher classification of Paleozoic gastropods inferred from their early shell ontogeny. Journal of the Czech Geological Society, 44(1-2), 137–154. Retrieved from http://www.jgeosci.org/index.php?pg=detail&ID=JCGS.781

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