Actinosphaerium

Actinosphaerium
Actinosphaerium eichhornii
Scientific classification
Domain: Eukaryota
Clade: Diaphoretickes
Clade: SAR
Clade: Stramenopiles
Phylum: Gyrista
Subphylum: Ochrophytina
Class: Raphidomonadea
Order: Actinophryida
Suborder: Actinosphaerina
Cavalier-Smith, 2013
Family: Actinosphaeriidae
Cavalier-Smith, 2013
Genus: Actinosphaerium
Ritter von Stein, 1857
Type species
Actinosphaerium eichhornii
(Ehrenberg, 1840) Stein, 1857
Synonyms
  • Echinosphoerium/Echinosphaerium Hovasse, 1965
  • Camptonema Schaudinn, 1894

Actinosphaerium is a genus of heliozoa, amoeboid unicellular organisms with many axopodial filaments that radiate out of their cell. It is classified within the monotypic family Actinosphaeriidae and suborder Actinosphaerina. Species of Actinophrys are distinguished by their large number of nuclei in each cell. Their axopodia sometimes terminate on the surface of nuclei. Vacuoles are abundant in the periphery of the cytoplasm.

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