Prokaryotic bacteria and blue-green algae and various primitive pathogens

• Because of lack of consensus on how to divide the organisms into phyla informal names are used for the major divisions

Wiktionary Word definitions in Wiktionary
n. (plural of moneron English)

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Monera \Mo*ne"ra\, n. pl. [NL., fr. Gr. mo`nos single.] (Zo["o]l.) The lowest division of rhizopods, including those which resemble the am[oe]bas, but are destitute of a nucleus. 2. (Biol.) One of the five kingdoms of living organisms in the five-kingdom ...

Wikipedia Word definitions in Wikipedia
Monera ( Greek - μονήρης (monḗrēs), "single", "solitary") was a kingdom that contained unicellular organisms with a prokaryotic cell organization (having no nuclear membrane ), such as bacteria. The taxon Monera was first proposed as a phylum by Ernst Haeckel ...