|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Gastropoda - Calyptraeidae
It was assigned to Crepidulidae by Ward and Blackwelder (1987); to Neotaenioglossa by Sepkoski (2002); and to Calyptraeidae by Martin (1904), Gardner (1947), Woodring (1957), Perrilliat (1987), Todd (2001) and Landau and Marques da Silva (2010).
|Year||Name and author|
|1904||Crucibulum Martin p. 244|
|1947||Crucibulum Gardner p. 566|
|1957||Crucibulum Woodring pp. 79, 82|
|1987||Crucibulum Perrilliat p. 8|
|1987||Crucibulum Ward and Blackwelder p. 131|
|2002||Crucibulum Sepkoski, Jr.|
|2010||Crucibulum Landau and Marques da Silva p. 26|
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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.