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Yochelcionelloidea

Yochelcionelloidea
Temporal range: Lower Cambrian–Mid Cambrian
Yochelcionella cyrano.JPG
Yochelcionella cyrano
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
(unranked): incertae sedis
Class: Helcionelloida
Order: Helcionelliformes
Superfamily: Yochelcionelloidea
Runnegar & Jell, 1976

Yochelcionelloidea is an extinct superfamily of paleozoic molluscs of uncertain position (Gastropoda or Monoplacophora). The earliest yochelcionellids are known from the Middle Tommotian, but they are most diverse from the Botomian through the early Middle Cambrian.

The taxonomy of the Gastropoda by Bouchet & Rocroi, 2005:

Yochelcionelloidea

According to the opinion of P. Yu. Parkhaev is in the class Helcionelloida, subclass Archaeobranchia Parkhaev, 2001, Order Helcionelliformes Golikov & Starobogatov, 1975:


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