This publication announces the valid establishment of 57 new bacterial and archaeal names and combinations in microbial nomenclature. The article is a validation list that formalizes names previously published elsewhere, making them officially recognized in bacteriological nomenclature. The names include new genera such as Anaerobacter, Desulfurella, Halorubrobacterium, Metallosphaera, Methanogenium, Natrialba, Ralstonia, Thermodesulforhabdus, Thermohydrogenium, and taxonomic orders including Verrucornicrobiales and Verrucomicrobiaceae. Numerous new species are validated across diverse bacterial groups, from actinomycetes to thermophilic and halophilic organisms. The validation process requires authors to submit documentation to the International Journal of Systematic Bacteriology to confirm compliance with nomenclatural requirements. The date of valid publication is the date of this list, not the original publication date. The article emphasizes that validation does not constitute taxonomic acceptance; organisms may later be recognized as synonyms or transferred to different genera. Reference strains with their depository locations are provided for each validated name, facilitating future research and culture collection access.

Key findings

• 57 new bacterial and archaeal names and combinations were formally validated for microbial nomenclature in this publication list
• New taxa validated include multiple thermophilic, halophilic, and anaerobic bacterial genera isolated from diverse environments including hydrothermal vents, oil fields, and termite guts
• Validation requires documentation submission but does not guarantee permanent taxonomic acceptance; names may later be synonymized or transferred to different genera
• All validated names are assigned reference strains deposited in international culture collections with standardized abbreviations for tracking and accessibility