Bacteria (Taxonomic Rank: Kingdom)
Microorganisms that lack a cell nucleus or any other membrane-bound cellular subunit including the phyla shown below.

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	Actinomyces Aminobacterium Aquifex Armatimonas Bacillus Bacteroides Bifidobacterium Blastocatella Borrelia Brevitalea Bryobacter Caldimicrobium Caldisericum Calditerrivibrio Chitinispirillum Chlamydia Chlamydophila Chloracidobacterium Chlorobium Chloroflexus Chrysiogenes Clostridium Dehalococcoides Deinococcus Denitrovibrio Desulfurispirillum Dictyoglomus Escherichia Fibrobacter Fimbriimonas Fusobacterium Gemmata Gemmatimonas Gloeotrichia Herpetosiphon Hydrogenobacter Lentisphaera Leptospira Leptospirillum Longimicrobium Meiothermus Micrarchaeum Mycoplasma Nitrospira Opitutus Parvarchaeum Petrotoga Prochlorococcus Prosthecobacter Rhodopirellula Salmonella Spiroplasma Streptobacillus Streptomyces Thermanaerovibrio Thermodesulfobacterium Thermotoga Victivallis

= Extinct Life Forms   = Living Creatures   = Fictional Beasts   = Inanimate Objects   = Ethereal Entities    = At least one collectible is catalogued