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Cyathaxoniidae
Taxonomy
Cyathaxoniidae was named by Milne-Edwards and Haime (1850). It is not extant. Its type is Cyathaxonia.
It was assigned to Cyathaxoniicae by Hill (1956); and to Metriophyllina by Hill (1981).
It was assigned to Cyathaxoniicae by Hill (1956); and to Metriophyllina by Hill (1981).
Subtaxa
Synonymy list
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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.
Fm. †Cyathaxoniidae Milne-Edwards and Haime 1850
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G. †Cyathaxonella Stuckenberg 1895
G. †Cyathaxonia Michelin 1847
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†Cyathaxonia cordillerensis Easton et al. 1958
†Cyathaxonia cornu Michelin 1846
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Invalid names: Cyathaxonia deriangmaensis Fan 2003 [synonym], Cyathaxonia tenuiseptata Fan 2003 [synonym], Cyathaxonia yunnanensis Fan 2003 [synonym]
†Cyathaxonia khmeriana Fontaine 1961
†Cyathaxonia minor He and Weng 1983
Diagnosis
No diagnoses are available