The type species Gemmatimonas aurantiaca strain T-27T was isolated from activated sludge in a sewage treatment system in 2003.

[5] Longimicrobium terrae strain CB-286315T was isolated from a soil sample from a typical Mediterranean forest ecosystem located in Granada, Spain.

This wide range of environments where Gemmatimonadota have been found suggests an adaptation to low soil moisture.

[9] Smaller numbers were also found in various aquatic environments, such as fresh waters and sediments, and in meadows and cropland located in boreal ecosystems [1].

Palauibacter" The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LSPN)[16] and National Center for Biotechnology Information.