Multi-volume works

Zittel, K.A. (ed.), 1880-1890. Handbuch der Palæontologie. R. Oldenbourg, München/Leipzig: 5 vols.. ≡

Articles

Zittel, K.A., 1878. Studien über fossile Spongien. Zweite Abtheilung. II. Lithistidae. Abh. Math.-Phys. Cl. Königl. Bayer. Akad. Wiss. 13 (1): 65-154, pls. I-XI. ≡

Zittel, K.A., 1878. Studien über fossile Spongien. Erste Abtheilung. I. Hexactinellidae. Abh. Math.-Phys. Cl. Königl. Bayer. Akad. Wiss. 13 (1): 1-63. ≡

Eponyms

(Genus) †Zittellospongia Malfatti, 1901 (sponge) Ref: P. Malfatti, 1901: 288 (footnote 2).
(Genus) †Zittelospongia Malfatti, 1901 (sponge) Ref: P. Malfatti, 1901: 288 (footnote 2).