| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Hydrasperma
Taxonomy
Hydrasperma was named by Long (1961). It is not extant. Its type is Hydrasperma tenuis.
It was assigned to Pteridospermophyta by Andrews (1970).
It was assigned to Pteridospermophyta by Andrews (1970).
Synonymy list
| Year | Name and author |
|---|---|
| 1961 | Hydrasperma Long |
| 1970 | Hydrasperma Andrews |
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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.
Diagnosis
No diagnoses are available