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Monotypic taxon:
Class †
Cycadeoideopsida
D.H.Scott (1923)
(plant)
Taxa
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Hierarchy
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Entity:
Spermatophytina (Subphylum) - seed plants
..†Caytoniopsida (Class)
..Cycadopsida (Class)
..†Dictyopteridiopsida (Class)
..Ginkgoopsida (Class)
..Pan-Angiospermae (Clade)
..Pan-Gnetophyta (Clade)
..†Peltaspermopsida (Class)
..†Pentoxylopsida (Class)
..Pinopsida (Class)
..Sarcospermataceae (Family)
..†Cycadeoideopsida (Class)
....†Cycadeoideales (Order)
Concise hierarchy
(Kingdom)
Plantae
-
(Phylum)
Tracheophyta
Current position
Spermatophytina
(Subphylum)
Caval.-Sm. (1998)
Ref:
Новіков, А. & Барабаш-Красни, Б. / Novikoff, A. & Barabasz-Krasny, B., 2015
: 58.
[indirect]
Alternative positions
†
Cycadeoideophyta
(Phylum)
T.N.Taylor (1981)
Ref:
A.B. Doweld, 2001
: XVII.
Cycadophyta
(Division)
Bessey (1907)
Ref:
Новіков, А. & Барабаш-Красни, Б. / Novikoff, A. & Barabasz-Krasny, B., 2015
: 58.
Historical positions
Cycadophyta
(Division)
Bessey (1907)
Ref:
A. Novikoff & B. Barabasz-Krasny, 2015
: 58.
†
Cycadeoideophyta
(Phylum)
T.N.Taylor (1981)
Ref:
A.B. Doweld, 2001
: XVII.
Number of Subtaxa
2024
Available in Systema Naturae 2000
†1o;5f;17g;2s
1989-present
Systema Naturae 2000
: 2 May 2023
[; †1o;5f;17g]
2015
A. Novikoff & B. Barabasz-Krasny
: 59
[; †1o;5f;17g]
2001
A.B. Doweld
: XVII
[; †1o;5f]
©2004-2024 Universal Taxonomic Services
Last updated:
1 Feb 2024