|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Gastropoda - Epitoniidae
It was reranked as Scala (Opalia) by Martin (1904); it was reranked as Scalaria (Opalia) by Strebel (1905); it was reranked as Epitonium (Opalia) by Moody (1916).
It was assigned to Scala by Martin (1904); to Scalaria by Strebel (1905); to Epitonium by Moody (1916); to Opaliinae by Sohl (1964); to Neotaenioglossa by Sepkoski (2002); and to Epitoniidae by Moore (1976), Wilson (1993), Todd (2001), Wienrich (2001) and Lima and Christoffersen (2014).
|Year||Name and author|
|1858||Opalia Adams and A.|
|1904||Scala (Opalia) Martin p. 213|
|1905||Scalaria (Opalia) Strebel|
|1916||Epitonium (Opalia) Moody p. 51|
|1964||Opalia Sohl p. 320|
|1976||Opalia Moore p. 30|
|1993||Opalia Wilson p. 280|
|2001||Opalia Wienrich p. 458|
|2002||Opalia Sepkoski, Jr.|
|2014||Opalia Lima and Christoffersen p. 393|
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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.