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Parasphenophyllum

Taxonomy
Parasphenophyllum was named by Asama (1970). It is not extant. Its type is Parasphenophyllum shansiense.

It was assigned to Sphenophyllales by Blazer (1975); and to Equisetophyta by Chandra and Tewari (1991).

Species
P. shansiense (type species)
Entered
by B. Allen (authorized by A. Dunhill) on 2020-05-07; modified by B. Allen on 2020-05-08

Synonymy list
YearName and author
1970Parasphenophyllum Asama
1975Parasphenophyllum Blazer
1991Parasphenophyllum Chandra and Tewari

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RankNameAuthor
kingdomPlantae
subkingdomViridiplantaeCavalier-Smith 1981
—Streptophyta(Jeffrey 1971)
superphylumEmbryophyta()
—Tracheophyta(Sinnott 1935)
RankNameAuthor
—Pteridobiotina
superphylumPteridophytanae
phylumEquisetophytaScott 1900
genusParasphenophyllumAsama 1970

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

G. †Parasphenophyllum Asama 1970
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
Diet: "photoautotroph"superp
Created: 2026-03-30 14:38:16
Modified: 2026-03-30 14:38:16
Source: superp = superphylum
Reference: Kenrick and Crane 1997

Age range: base of the Artinskian to the top of the Kungurian or 290.10000 to 274.40000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Artinskian - Kungurian290.1 - 274.4Japan (Honshu) P. sp. 1 (30212)