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Petalaxis fomichevi
Taxonomy
Petalaxis fomichevi was named by Sando (1983). Its type specimen is specimen number 57 of Fomichev (1953, p. 456) and is a 3D body fossil.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1983 | Petalaxis fomichevi Sando p. 30 |
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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 fomichevi Sando 1983
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| W. J. Sando 1983 | Petalaxis with corallite diameter 5 to 8 mm and 13 to 22 major septa that extend about half way to the columella and commonly extend into the dissepimentarium. Minor septa well developed. Col-umella a simple thickened axial plate ordinarily con-nected to the counter septum and to the cardinal septum in some corallites. Dissepimentarium composed of 1 to 3 rows of inflated dissepiments of varying sizes. Tabulae complete and incomplete, flat to convex, horizontal, and spaced 0.25 to 0.5 mm apart. Ratio of tabularium width to corallite diameter about 0.5 to 0.7. 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