Endohelea

Endohelea is a proposed clade of eukaryotes that are related to Archaeplastida and the SAR supergroup. They used to be considered heliozoans, but phylogenetically they belong to a group of microorganisms known as Cryptista.

Classification
Based on studies done by Cavalier-Smith, Chao & Lewis in 2015, the class contained two orders: Microhelida and Heliomonadida. However, according to a study by Cavalier-Smith, published in 2022, the order Heliomonadida is actually part of Cercozoa, and only one species of heliomonad, Tetrahelia pterbica, has been kept in Endohelea as its own order Axomonadida.
 * Class Endohelea Cavalier-Smith 2012
 * Order Microhelida Cavalier-Smith 2011
 * Family Microheliellidae Cavalier-Smith 2011
 * Genus Microheliella Cavalier-Smith & Chao 2012
 * Order Axomonadida
 * Family Tetraheliidae
 * Genus Tetrahelia
 * ? Order Heliomonadida Cavalier-Smith 1993 emend. Cavalier-Smith 2012
 * ? Family Heliomorphidae Cavalier-Smith & Bass 2009
 * ? Genus Heliomorpha Cavalier-Smith & Bass 2009