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Petalaxis santaemariae
Taxonomy
Lithostrotionella (Hillia) santaemariae was named by de Groot (1963).
It was recombined as Petalaxis santaemariae by Sando (1983).
It was recombined as Petalaxis santaemariae by Sando (1983).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1963 | Lithostrotionella (Hillia) santaemariae de Groot p. 91 figs. pl. 21, figs. 1a-e |
| 1983 | Petalaxis santaemariae 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 santaemariae de Groot 1963
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| W. J. Sando 1983 | Petalaxis with corallite diameter 3.5 to 8 mm and 16 to 19 major septa that closely approach the columella but seldom reach it and extend into the dissepimentarium, ordinarily attached to the corallite wall. Minor septa poorly developed. Corallite walls strongly dilated. Columella a simple thickened axial plate connected to counter or cardinal septum. Dissepimentarium weakly lonsdaleoid, composed of a single row of small inflated dissepiments. Tabulae most-ly complete, horizontal, mostly concave, and irregularly spaced 0.25 to 1 mm apart. A peripheral zone of clinotabellae may be present. Ratio of tabularium width to corallite diameter about 0.8. Increase peripheral. |
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