1. Aptychi;Arkell,1957
2. Beiträge zur Palaeontologie oberjurassischer Riffe. I. Die Aptychen (Ammonoidea) des Oberjura von Stramberg (ČSR). II. Die Aptychen der Klrntnitzer Serie in Österreich;Bachmayer;Annals Naturhistorisches Museum Wien,1963
3. Biostratigraphy and the Mid–Jurassic environment from the Ogrodzieniec quarry;Barski;Tomy Jurajskie,2004
4. Kimmeridgian and early Tithonian cephalopods from the Kisújbánya Limestone Formation, Zengővárkony (Mecsek Mountains, southern Hungary), their faunal composition, palaeobiogeographic affinities, and taphonomic character;Bujtor;Carnets Geol,2021
5. Contribuição ao estudo dos Aptychi (Cephalopoda-Ammonoidea) do Jurássico;Closs;Escola de Geologia Pórto Alegre, Publication Especial,1960