1. Alexander. R. McN., 1962, Viscoelastic properties of the body wall of sea anemones, J. Exp. Biol. 39: 373–386.
2. Arkell, W. J.. 1957, Sutures and septa in Jurassic ammonite systematics. Geol. Mag. 94: 235–248.
3. Arkell, A. K., Kummel, B., and Wright, C. W., 1957, Mesozoic Ammonoidea, in: Treatise on Invertebrate Paleontology, Part L, Mollusca 4 ( R. C. Moore, ed.), Geological Society of America and University of Kansas Press, Lawrence, KS, pp. 80–437.
4. Bandel, K., 1981, The structure and formation of the siphuncular tube of Quenstedtoceras compared with that of Nautilus (Cephalopoda), N. Jb. Geol. Paläont. Abh. 161: 153–171.
5. Bandel, K., 1982, Morphologie und Bildung der frühontogenetischen Gehäuse bei conchiferen Mollusken, Facies 7: 1–198.