| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Zymophilus raffinosivorans | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Zymophilus paucivorans | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Zymomonas mobile | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Zwartia | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Zwartia hollandica | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Zunongwangia pacifica | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Zunongwangia flava | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Zuelzera | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Zuelzera stenostrepta | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Zophobihabitans | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Zophobihabitans entericus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Zooshikella harenae | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Zongyanglinia marina | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Zongyangia | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Zongyangia hominis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Zobellia galactanovorans | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Zobellia barbeyronii | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Zobellella iuensis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Zimmermannella helvola | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Zimmermannella faecalis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Zimmermannella bifida | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Zhihengliuella aestuarii | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Zhenhengia | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Zhenhengia yiwuensis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Zhangella | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Zhangella mobilis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Zeimonas | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Zeimonas sediminis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Zeimonas arvi | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Zavarzinia marina | Unknown | Valid (ICNP) | Excubia bot over 1 year ago |