|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
It was reranked as the unranked clade Mollusca by Edgecombe et al. (2011).
It was assigned to Eutrochozoa by Zrzavy et al. (1998); to Metazoa by Shoshani et al. (1989) and Sepkoski (2002); to Trochozoa by Edgecombe et al. (2011); and to Schizocoela by Nielsen (2012).
|Year||Name and author|
|1846||Chiton cottae Geinitz p. 389 figs. pl. 5, figs. 13-14|
|1861||Chiton cottai Geinitz p. 55|
|1989||Mollusca Shoshani et al. p. 435|
|1998||Mollusca Zrzavy et al.|
|2002||Mollusca Sepkoski, Jr.|
|2011||Mollusca Edgecombe et al. p. 153 figs. Fig. 1|
|2012||Mollusca Nielsen p. 140 figs. Fig. 23.1|
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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.