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Zonophyllum lonense
Taxonomy
Mesophyllum lonense was named by Stumm (1937).
It was recombined as Cystiphyllum lonense by Ma (1956); it was recombined as Cystiphylloides lonense by Merriam (1974); it was recombined as Zonophyllum lonense by Pedder (2004).
It was recombined as Cystiphyllum lonense by Ma (1956); it was recombined as Cystiphylloides lonense by Merriam (1974); it was recombined as Zonophyllum lonense by Pedder (2004).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1937 | Mesophyllum lonense Stumm p. 440 |
| 1956 | Cystiphyllum lonense Ma p. 80 |
| 1974 | Cystiphylloides lonense Merriam p. 66 figs. Plate 19, figures 1-9 |
| 2004 | Zonophyllum lonense Pedder p. 847 |
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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.
†Zonophyllum lonense Stumm 1937
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| C. W. Merriam 1974 | This medium-sized, solitary, ceratoid Cystiphylloides has large tabellae not sharply set off from large interior dissepiments; few recognizable septal crests are present in transverse sections, but the deep calice has weak, raised, discontinuous radial striations. Both large and small dissepiments are in the peripheral band. |