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Notocyathus subviola
Taxonomy
Deltocyathus subviola was named by Dennant (1902). It is not extant. Its type locality is Spring Creek, Dennant collection, which is in an Oligocene marine horizon in Australia.
It was recombined as Notocyathus subviola by Cairns (1997).
It was recombined as Notocyathus subviola by Cairns (1997).
Sister species lacking formal opinion data
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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.
†Notocyathus subviola Dennant 1902
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Diagnosis
No diagnoses are available