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Petalaxis dobrolyuhovae
Taxonomy
Petalaxis dobrolyuhovae was named by Sando (1983). Its type specimen is specimen illustrated by Dobrolyubova (1936b) as her plate 9, figures 1 and 2 and is a 3D body fossil.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1983 | Petalaxis dobrolyuhovae Sando pp. 35 - 36 |
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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 dobrolyuhovae Sando 1983
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| W. J. Sando 1983 | Petalaxis with corallite diameter 5 to 11 mm and 11 to 17 major septa that extend halfway to or closely approach the columella but seldom reach it and commonly extend into the dissepimentarium. Minor sep-ta absent to well developed. Columella ranging from a simple axial plate connected to the counter septum to a complex structure composed of axial plate, vertical axial tabellae, and rare septal lamellae augmented by stereoplasm in some corallites to produce a netlike structure in transverse section. Dissepimentarium com-posed of 1 to 2 rows of inflated dissepiments of varying sizes. Tabulae mostly incomplete, flat, concave, or con-vex, horizontal, and irregularly spaced 0.25 to 1 mm apart. Ratio of tabularium width to corallite diameter about 0.6 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