|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Anthozoa - Stauriida - Petalaxidae
It was synonymized subjectively with Lithostrotion by Hill (1956).
It was assigned to Rugosa by Sepkoski (2002); and to Petalaxidae by Bamber and Fedorowski (1998) and Fedorowski et al. (2007).
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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.