Related how?

Biota (Life)
Eukaryote (Eukarya)
Chromista
Harosa
Halvaria
Alveolate (Alveolata)
Dinozoa
Dinoflagellata (Dinoflagelate)
Dinophyceae
Gonyaulacales

Pyrophacaceae (25364409)

Children (3 direct children, 10 direct and indirect children):

Fragilidinium (tree size 1)

Fragilidium (tree size 4)

Pyrophacus (tree size 2)