|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
It was reranked as the suborder Halecomorphi by Hay (1902); it was reranked as the superorder Halecomorphi by Hall and Wolberg (1989); it was reranked as the unranked clade Halecomorphi by Brito (2000), Nelson (2006), Cavin et al. (2007), Alvarado-Ortega and Espinosa-Arrubarrena (2008), Machado et al. (2013) and Carnevale and Godfrey (2018).
It was assigned to Actinopterygia by Cope (1887); to Pisces by Cope (1891); to Holostei by Hay (1902); to Ganoidei by Jordan (1963); to Actinopterygii by Hall and Wolberg (1989) and Brito (2000); to Holostei by Cavin et al. (2007); to Teleostei by Alvarado-Ortega and Espinosa-Arrubarrena (2008); to Neopterygii by Machado et al. (2013); and to Halecostomi by Nelson (2006) and Carnevale and Godfrey (2018).
|Year||Name and author|
|1887||Halecomorphi Cope p. 1018|
|1891||Halecomorphi Cope p. 1|
|1902||Halecomorphi Hay p. 378|
|1963||Halecomorphi Jordan p. 615|
|1989||Halecomorphi Hall and Wolberg|
|2000||Halecomorphi Brito p. 750|
|2006||Halecomorphi Nelson p. 95|
|2007||Halecomorphi Cavin et al.|
|2008||Halecomorphi Alvarado-Ortega and Espinosa-Arrubarrena|
|2013||Halecomorphi Machado et al.|
|2018||Halecomorphi Carnevale and Godfrey p. 164|
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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.