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Petalaxis radians
Taxonomy
Lithostrotionella (Hillia) radians was named by de Groot (1963).
It was recombined as Petalaxis radians by Sando (1983).
It was recombined as Petalaxis radians by Sando (1983).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1963 | Lithostrotionella (Hillia) radians de Groot p. 89 figs. pl. 20, figs. 1a-c |
| 1983 | Petalaxis radians Sando p. 31 |
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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 radians de Groot 1963
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| W. J. Sando 1983 | Petalaxis with corallite diameter 7 to 9 mm and 15 to 18 major septa that closely approach the columella but seldom reach it and extend into the dissepimentarium, ordinarily being attached to the cor-allite wall. Minor septa ordinarily well developed. Col-umella a simple axial plate connected to the counter or cardinal septum. Dissepimentarium weakly lonsdaleoid, composed of 1 to 3 rows of inflated dissepiments of vary-ing sizes. Tabulae incomplete, horizontal, mostly convex, and irregularly spaced 0.25 to 1 rrim apart. Ratio of tabularium width to corallite diameter about 0.5 to 0.6. 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