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Petalaxis evidens
Taxonomy
Petalaxis evidens was named by Kozyreva (1974).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1974 | Petalaxis evidens Kozyreva p. 30 figs. pl. 2, figs. 2a, b, 3 |
| 1983 | Petalaxis evidens Sando p. 33 |
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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 evidens Kozyreva 1974
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| W. J. Sando 1983 | Petalaxis with corallite diameter 8 to 16 mm and 18 to 22 .major septa that extend about two-thirds of the way to the columella but seldom extend into the dissepimentarium. Minor septa absent or very poor-ly developed. Columella a simple thickened axial plate connected to the counter septum. Dissepimentarium consists of 1 to 3 rows of large inflated dissepiments. Tabulae complete and incomplete, horizontal, concave, turned up at the columella, and irregularly spaced 0.25 to 1 mm apart. Ratio of tabularium width to corallite diameter about 0.3 to 0.4. Mode of increase unknown. |
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