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Taxon:
Superfamily †"
Yohelcionelloidea
"
nom. null.
(mollusc)
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Hierarchy
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Entity:
†Helcionelliformes (Order)
..[†Helcionelloidea] (Superfamily)
..†Scenelloidea (Superfamily)
..†Yochelcionelloidea (Superfamily)
..[†Yohelcionelloidea] (Superfamily)
Concise hierarchy
(Kingdom)
Animalia
-
(Phylum)
Mollusca
-
(Class)
Gastropoda
-
(Order)
Helcionelliformes
Current position
†
Helcionelliformes
(Order)
Golikov & Starobogatov, 1975
Ref:
P.Yu. Parkhaev, 2008
: fig. 3.2; Parkhaev, 2017: fig. 1.
Historical positions
†
Helcionelliformes
(Order)
Golikov & Starobogatov, 1975
Ref:
P.Yu. Parkhaev, 2008
: fig. 3.2.
Number of Subtaxa
2008
P.Yu. Parkhaev
: 52
[; †3f;21g]
©2004-2025 Universal Taxonomic Services
Last updated:
21 Sep 2025