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Cylindricum
Taxonomy
Synonymy list
| Year | Name and author |
|---|---|
| 1949 | Cylindricum Linck |
| 1975 | Cylindricum Hantzschel |
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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. †Cylindricum Linck 1949
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| W. Hantzschel 1975 | Plugs (fillings of tubes) shaped like test tubes, rounded at lower end, not pointed, walls smooth; diameter up to 5 cm, up to several cm long; preserved in groups in convex hyporelief oriented perpendicularly to bedding plane. |