Bigelowiella natans is a species of Chlorarachniophyte alga that is a model organism for the Rhizaria.

[1] Chlorarachniophyte are unicellular marine algae with plastids of secondary endosymbiotic origin.

Bigelowiella natans are a key resource for studying the supergroup of mostly unicellular eukaryotes.

[1] The Bigelowiella natans genome was the first rhizarian nuclear genome to be sequenced.

The genome contains 94.7 Mbp encoding for 21,708 genes.