Archinacellidae
Introduction †'''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, 2005 categorizes Archinacellidae in the superfamilia Archinacelloidea within the Paleozoic molluscs of uncertain systematic position. This family has no subfamilies.
Genera Genera in the family Archinacellidae include:* ''Archinacella'' Ulrich & Scofield, 1897 – type genus of the family Archinacellidae** ''Archinacella powersi'' Ulrich & Scofield, 1897 – type species** ''Archinacella instabilis'' (Billings, 1865)* ''Barrandicella'' Peel & Horný, 1999* ''Barrandicellopsis'' Horný, 2000** ''Barrandicellopsis ovata'' – synonym: ''Archinacella ovata'' Barrande in Perner, 1903 – Archinacella ovata var. elevata Barrande in Perner, 1903 – type species, Middle Ordovician from Bohemia** ''Barrandicellopsis extenuata'' – synonym: ''Orthonychia extenuata'' Barrande in Perner, 1903 – probably belongs to genus ''Barrandicellopsis'', Middle Ordovician from Bohemia
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