Halvaria

Halvaria
Important halvarian groups. Clockwise from top-left: a water mold (Oomycetes), a brown alga (Phaeophyta), some diatoms (Bacillariophyta), some dinoflagellates (Miozoa), some ciliates (Ciliophora) and an opalinid (Bigyra).
Scientific classification
Domain: Eukaryota
Clade: Diaphoretickes
Subkingdom: SAR
Infrakingdom: Halvaria
Cavalier-Smith 2010
Superphyla and phyla

Halvaria is a taxonomic grouping of protists that includes Alveolata and Stramenopiles (Heterokonta).

Analyses in 2007 and 2008 revealed that the Stramenopiles and the Alveolata are related, and form a reduced clade of what were seen to be a paraphyletic group, the chromalveolates. The two clades together with the Rhizaria (originally one of the six major eukaryote groups) form a clade dubbed the SAR supergroup.

A phylogenomic analysis from 2016 cast doubt on Halvaria, suggesting that Alveolata is the sister group to Rhizaria (making the R + A clade) through new rhizarian sequence data, and that support for Halvaria might be an artifact of low taxon sampling as well as long branch attraction.

However, later analyses from 2021 support Halvaria as a solid clade.

SAR Supergroup

Rhizaria

Halvaria

Stramenopiles

Alveolata


This page was last updated at 2024-01-04 19:39 UTC. Update now. View original page.

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