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Petalaxis monocyclicus
Taxonomy
Lithostrotionella monocyclica was named by de Groot (1963).
It was recombined as Petalaxis monocyclicus by Sando (1983).
It was recombined as Petalaxis monocyclicus by Sando (1983).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1963 | Lithostrotionella monocyclica de Groot p. 85 figs. pl. 17, figs. 1a-c |
| 1983 | Petalaxis monocyclicus Sando pp. 28 - 29 |
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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.
†Petalaxis monocyclicus de Groot 1963
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| W. J. Sando 1983 | Petalaxis with corallite diameter 5 to 8 mm and 20 to 24 major septa that ordinarily approach the columella but do not reach it and seldom extend into the dissepimentarium. Minor septa absent. Columella a simple thin axial plate connected to the counter septum and to the cardinal septum in some corallites. Dis-sepimentarium composed of 1 to 3 rows of elongate dissepiments of varying sizes. Tabulae complete, essen-tially horizontal, concave, turned up at the columella, and irregularly spaced 0.25 to 1 mm apart. Ratio of tabularium width to corallite diameter about OA to 0.5. Mode of increase peripheral. |
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| Reference: Kiessling 2004 | |||||
Collections
No collection or age range data are available