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Chaloneria
Taxonomy
Chaloneria was named by Pigg and Rothwell (1983).
It was assigned to Lycopsida by Pigg and Rothwell (1983).
It was assigned to Lycopsida by Pigg and Rothwell (1983).
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1983 | Chaloneria Pigg and Rothwell p. 133 |
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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.
G. †Chaloneria Pigg and Rothwell 1983
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| K. B. Pigg and G. W. Rothwell 1983 | Unbranched, upright plants with rounded base, bisporangiate fertile regions, and secondary growth. Leaf bases robust, parichnos present, leaf cushions absent. Exarch protostele, medullated above basal region, with radial plates of xylem parenchyma separating groups of tra- cheids. Leaves with blunt keel and two bands of sunken stomata on abaxial surface of lateral lam- inae. Thick-walled, trilete megaspores with auri- culae, conforming to sporae dispersae genus Valvisisporites; microspores trilete and bladdered, |
Measurements
No measurements are available
No ecological data are available
Age range: base of the Desmoinesian to the top of the Virgilian or 312.80000 to 298.90000 Ma
Collections (7 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Carboniferous | USA (Oklahoma) | C. sp. (12768 12769 12918) | |
| Moscovian | USA (Illinois) | C. periodica (25408) | |
| Desmoinesian | USA (Kentucky) | C. periodica (209588) | |
| Kasimovian | USA (Illinois) | C. sp. (224241) | |
| Virgilian | USA (Ohio) | C. cormosa (209586) |