Browse or search the LPSN for species or genus information. Once you have selected a microorganism genus or species, "Effective publication" provides the citation to the research literature wherein this species was first named and (generally) described.
For species that have been renamed or reclassified, look at the "Synonyms" section.
Species appearing in this section may refer to either older names - no longer in use (due to reclassification or renaming) OR they can be up-to-date names (if you happen to be looking at a record of a no-longer-in-use species name).
Species appearing in this section will brief citation to researcher names and dates. Research names indicate the individuals who first published this name/description in the literature and the date indicates the date of publication.
These section is hotlinked, click on the link(s) and you will be taken to a record that provides information regarding the synonym, including citation information for that synonym's information.
You can navigate through genus, family, orders, etc. similarly using the "browse" function.