Shells from large New South Wales animals. Animals approximately 10-15cm long. Largest shell 15mm long. Photos: Alison Miller.
The shell of Dolabrifera brazieri is an internal remnant, without a real function. Although usually a recognisable shape, shells are sometimes mishapen, as illustrated here. The shells show little, if any, sign of spirality, the larval shell remaining as a little rounded concave apex, and the adult shell being a slightly concave flattened plate. In the photos showing the outside of the shell (upper left, lower right) the shell growth lines are clearly visible, and traces of the brown periostracal layer, which peels off as the shell dries, are still present.
Rudman, W.B., 2000 (September 3) Dolabrifera brazieri - shell. [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/factsheet/dolabrazsh