|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
It was reranked as the unranked clade Heterodonta by Ameghino (1889) and Bouchet et al. (2010).
It was assigned to Ditremata by Ameghino (1889); to Pelecypoda by Ward and Blackwelder (1987) and Shoshani et al. (1989); to Heteroconchia by Giribet and Wheeler (2002) and Bieler and Mikkelsen (2006); to Bivalvia by Newell (1965), Vokes (1980), Gliozzi and Malatesta (1983), Squires (1984), Squires (1987), Wingard (1993), Cope (1997), Reid (1998) and Rosenberg et al. (2006); and to Heteroconchia by Bouchet et al. (2010).
|Year||Name and author|
|1889||Heterodonta Ameghino p. 43|
|1965||Heterodonta Newell p. 18|
|1980||Heterodonta Vokes p. 100|
|1983||Heterodonta Gliozzi and Malatesta p. 91|
|1984||Heterodonta Squires p. 44|
|1987||Heterodonta Squires p. 59|
|1987||Heterodonta Ward and Blackwelder p. 129|
|1989||Heterodonta Shoshani et al. p. 435|
|1993||Heterodonta Wingard p. 50|
|1997||Heterodonta Cope p. 733|
|2002||Heterodonta Giribet and Wheeler|
|2006||Heterodonta Bieler and Mikkelsen p. 231|
|2006||Heterodonta Rosenberg et al.|
|2010||Heterodonta Bouchet et al.|
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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.