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Columnaxon
Taxonomy
Columnaxon was named by Scrutton (1971) [Sepkoski's age data: S Ludl]. It is not extant.
It was assigned to Cyathaxoniidae by Hill (1981); to Rugosa by Sepkoski (2002); and to Columnaxonidae by Fedorowski and Vassilyuk (2011).
It was assigned to Cyathaxoniidae by Hill (1981); to Rugosa by Sepkoski (2002); and to Columnaxonidae by Fedorowski and Vassilyuk (2011).
Species lacking formal opinion data
Synonymy list
Year | Name and author |
---|---|
1971 | Columnaxon Scrutton |
1981 | Columnaxon Hill |
2002 | Columnaxon Sepkoski |
2011 | Columnaxon Fedorowski and Vassilyuk p. 136 |
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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.
G. †Columnaxon Scrutton 1971
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Diagnosis
No diagnoses are available