Cyrtoneritimorpha, also Cyrtoneritida,
is a
clade of fossil
sea snails,
marine gastropod mollusks
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is esti ...
within the clade
Neritimorpha
Neritimorpha is a taxonomic grouping, an unranked major clade of snails, gastropod mollusks. This grouping includes land snails, sea snails, slugs, some deepwater limpets, and also freshwater snails. Neritimorpha contains around 2,000 extant sp ...
.
This order contains two extinct families:
Orthonychiidae and
Vltaviellidae.
References
The Paleobiology Database
Prehistoric gastropods
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