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Taxonogenomics combines phenotypic assays and genomic analysis as a means of characterizing novel strains. We used this strategy to study Marseille-P9898^T strain, an aerobic, motile, Gram-negative, spore-forming, and rod-shaped bacterium isolated from planarian <i>Schmidtea mediterranea</i>. Marseille-P9898^T is catalase-positive and oxidase-negative. The major fatty acids detected are 12-methyl-tetradecanoic acid, 13-methyl-tetradecanoic acid, and hexadecanoic acid. Marseille-P9898^T strain shared more than 98% sequence similarity with the <i>Metabacillus niabensis</i> strain 4T19^T (98.99%), <i>Metabacillus halosaccharovorans</i> strain E33^T (98.75%), <i>Metabacillus malikii</i> strain NCCP-662^T (98.19%), and <i>Metabacillus litoralis</i> strain SW-211^T (97.15%). Marseille-P9898 strain belongs to <i>Metabacillus</i> genus. Genomic analysis revealed the highest similarities with Ortho-ANI and dDDH, 85.76% with <i>Metabacillus halosaccharovorans,</i> and 34.20% with <i>Bacillus acidicola</i>, respectively. These results show that the Marseille-P9898^T strain is a novel bacterial species from <i>Metabacillus</i> genus, for which we propose the name of <i>Metabacillus schmidteae</i> sp. nov. (Type strain Marseille-P9898^T = CSUR P9898^T = DSM 111480^T).