[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990
     Phylum "Proteobacteria" Garrity et al. 2005 see Superphylum Proteobacteria Craig et al. 2010
       Class Alphaproteobacteria Garrity et al. 2006
         Order Rhodobacterales Garrity et al. 2006
           Family Rhodobacteraceae Garrity et al. 2006
             Genus Jannaschia Wagner-Döbler et al. 2003
               1 Jannaschia helgolandensis Wagner-Döbler et al. 2003
               2 Jannaschia cystaugens Adachi et al. 2004
               3 Jannaschia rubra Macián et al. 2005
               4 Jannaschia seosinensis Choi et al. 2006