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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. |
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| Reference: Kiessling 2004 | |||||
Age range: base of the Emsian to the top of the Early/Lower Emsian or 407.60000 to 402.50000 Ma
Collections (7 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Emsian | USA (Nevada) | Zonophyllum lonense (90940 90941 90942 90945 90947) | |
| Emsian | USA (Nevada) | Zonophyllum lonense (90930 90934) |