|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Bivalvia - Myalinida - Ambonychiidae
It was recombined as Ambonychia undata by Hall (1847); it was recombined as Clionychia undata by Ulrich (1894) and Soot-Ryen and Soot-Ryen (1960); it was recombined as Cleionychia undata by Pojeta (1966).
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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.