Scenelloidea is an extinct superfamily of paleozoic
mollusc
Mollusca is a phylum of protostome, protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant taxon, extant species of molluscs are recognized, making it the second-largest animal phylum ...
s of uncertain position (
Gastropoda
Gastropods (), commonly known as slugs and snails, belong to a large Taxonomy (biology), taxonomic class of invertebrates within the phylum Mollusca called Gastropoda ().
This class comprises snails and slugs from saltwater, freshwater, and fro ...
,
Helcionelloida
Helcionelloida is an extinct group of ancient molluscs (phylum Mollusca). These are the oldest known conchiferan molluscs, that is, they had a mineralised shell. Some members of this class were mistaken for Monoplacophorans. The class was ere ...
, or
Monoplacophora
Shell of Monoplacophora
Monoplacophora , meaning "bearing one plate", is a polyphyletic class of molluscs with a cap-like shell, inhabiting deep sea environments. Extant representatives were not recognized as such until 1952; previously they wer ...
).
Families
Based on the
taxonomy of the Gastropoda by Bouchet & Rocroi (2005) families in the Scenelloidea include:
* †
Scenellidae
''Scenella'' is an extinct genus of fossil invertebrate animal which is generally considered to be a mollusc; at various times it has been suggested that this genus belongs with the gastropods, the monoplacophorans, or the helcionellids, although ...
* †
Coreospiridae
* †
Igarkiellidae
References
* Miller, S. A. (1889). ''North American Geology and Palaeontology for the use of Amateurs, Students and Scientists''. Western Methodist Book Concern. Cincinnati. 664 p
Prehistoric gastropods
Mollusc superfamilies
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