| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Onychium
Taxonomy
Onychium was named by Kaulfuss (1820). It is extant.
It was assigned to Pteridaceae by Chauhan (1991).
It was assigned to Pteridaceae by Chauhan (1991).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1820 | Onychium Kaulfuss |
| 1991 | Onychium Chauhan |
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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
Measurements
No measurements are available
No ecological data are available
Age range
Maximum range based only on fossils: Late/Upper Pleistocene or 0.12900 to 0.01170 Ma
Minimum age of oldest fossil (stem group age): 0.0117 Ma
Minimum age of oldest fossil (stem group age): 0.0117 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Pleistocene | India (West Bengal) | O. sp. (224677 228819) | |
| Quaternary | India (Tamil Nadu) | O. japonicum (228849) | |
| Late/Upper Pleistocene | India (Assam) | O. sp. (228759) |