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Petalaxis lisitschanskensis
Taxonomy
Petalaxis vesiculosus lisitschanskensis was named by Fomichev (1953).
It was recombined as Petalaxis lisitschanskensis by Sando (1983).
It was recombined as Petalaxis lisitschanskensis by Sando (1983).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1953 | Petalaxis vesiculosus lisitschanskensis Fomichev p. 462 figs. pl. 32, figs. 3a, b |
| 1983 | Petalaxis lisitschanskensis Sando p. 32 |
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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 lisitschanskensis Fomichev 1953
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| W. J. Sando 1983 | Petalaxis with corallite diameter 12 to 15 mm and 16 to 21 major septa that approach the col-umella and may or may not reach it and do not extend in-to the dissepimentarium. Minor septa ordinarily well developed. Columella a simple thickened axial plate or-dinarily connected to the counter septum. Dissepimen-tarium composed of 1 to 5 rows of inflated dissepiments of variable size. Tabulae complete or ineomplete, horizontal, concave or convex, and irregularly spaced 0.25 to 0. 75 mm apart. Ratio of tabularium width to cor-allite diameter about 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