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Monotypic taxon:
Series
Hexanchida
(fish)
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Entity:
Squalomorphi (Superorder)
..Squalida (Series)
..Squatinida (Series)
..Hexanchida (Series)
....Hexanchiformes (Order) - six-gill sharks
Concise hierarchy
(Kingdom)
Animalia
-
(Phylum)
Chordata
-
(Class)
Chondrichthyes
Current position
Squalomorphi
(Superorder)
Ref:
J.S. Nelson et al., 2016
: 57; [Nelson et al., 2016: fig. (p. 58)].
Historical positions
Squalomorphi
(Superorder)
Ref:
J.S. Nelson et al., 2016
: 57, 73.
Number of Subtaxa
2026
Available in Systema Naturae 2000
1o;2f;4g;5s; †2f;5g
1989-present
Systema Naturae 2000
: 10 May 2025
[1o;2f;4g;5s; †2f]
2016
J.S. Nelson et al.
: 75
[1o;2f; †3f]
©2004-2025 Universal Taxonomic Services
Last updated:
21 Sep 2025