Scenelloidea

Scenelloidea is an extinct superfamily of paleozoic molluscs of uncertain position (Gastropoda, Helcionelloida, or Monoplacophora).^[1]

Scenelloidea Temporal range: Middle Ordovician–Late Ordovician PreꞒ Ꞓ O S D C P T J K Pg N
Scenella from the Burgess Shale, Middle Cambrian, Walcott Quarry, near Field, British Columbia.
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda, †Helcionelloida, or Monoplacophora
Superfamily:	†Scenelloidea Miller, 1889

Families

Based on the taxonomy of the Gastropoda by Bouchet & Rocroi (2005)^[1] families in the Scenelloidea include:

• † Scenellidae
• † Coreospiridae
• † Igarkiellidae