Conchifera

Gegenbaur C. (1878). Grundriss der vergleichenden Anatomie. Zweite verbesserte Auflage. Leipzig, W. Engelmann. 655 p.

Kocot, K. M., Todt, C., Mikkelsen, N. T. & Halanych, K. M. (2019). Phylogenomics of Aplacophora (Mollusca, Aculifera) and a solenogaster without a foot. <em>Proceedings of the Royal Society B: Biological Sciences.</em> 286 (1902): 1-9.

Runnegar B. & Pojeta, J. 1974 Molluscan phylogeny: the paleontological viewpoint. <i>Science</i> 186 (4161): pp.311-317

Salvini-Plawen L. (1980). A reconsideration of systematic in the Mollusca (Phylogeny and higher classification). <i>Malacologia 19 (2)</i>: 249-278

Steiner G. & Dreyer, H. 2003- Molecular phylogeny of Scaphopoda (Mollusca) inferred from 18S rDNA sequences: support for a Scaphopoda-Cephalopoda clade. Zoologica Scripta 32: 343-356.