†Archinacelloidea is an extinct superfamily of paleozoic
molluscs of uncertain position (
Gastropoda or
Monoplacophora
Monoplacophora , meaning "bearing one plate", is a polyphyletic superclass of molluscs with a cap-like shell inhabiting deep sea environments . Extant representatives were not recognized as such until 1952; previously they were known only from ...
).
Families
* †
Archinacellidae
†Archinacellidae is an extinct family of paleozoic molluscs of uncertain position (Gastropoda or Monoplacophora).
Description
These are cap-shaped fossil shells.
Taxonomy
The taxonomy of the Gastropoda by Bouchet & Rocroi, 2005Bouchet P. ...
* †
Archaeopragidae
†Archaeopragidae is an extinct family of paleozoic molluscs of uncertain position (Gastropoda or Monoplacophora).
Taxonomy
The taxonomy of the Gastropoda by Bouchet & Rocroi, 2005Bouchet P. & Rocroi J.-P. (Ed.); Frýda J., Hausdorf B., Pond ...
References
Prehistoric gastropods
Middle Ordovician first appearances
Late Ordovician extinctions
{{paleo-mollusc-stub