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Acrocyathus unicus
Taxonomy
Lithostrotion (Lithostrotionella) unicum was named by Yabe and Hayasaka (1915).
It was recombined as Acrocyathus unicus by Sando (1983).
It was recombined as Acrocyathus unicus by Sando (1983).
Synonymy list
| Year | Name and author |
|---|---|
| 1915 | Lithostrotion (Lithostrotionella) unicum Yabe and Hayasaka p. 133 |
| 1983 | Acrocyathus unicus Sando p. 22 |
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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.
†Acrocyathus unicus Yabe and Hayasaka 1915
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| W. J. Sando 1983 | Cerioid Acrocyathus? with corallite diameter averaging 7 mm and about 22 to 26 major sep-ta that approach the columella but seldom reaeh it and seldom extend into the dissepimentarium. Minor septa well developed. Columella seemingly a simple axial plate augmented by a few axial tabellae and septal ]ameBae. Dissepimentarium composed of 1 to 3 rows of large in-flated dissepiments. Tabulae complete, conical, and spaced 6 to 7 in 2 mm. Ratio of tabularium width to cor-allite diameter about 0.5. 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