Fig. 3
![Fig. 3](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs13358-020-00215-7/MediaObjects/13358_2020_215_Fig3_HTML.png)
Detail of the soft parts of Subplanites sp. to show details of the reproductive organs (green colours). a Detail of the photo in b taken with UV-light; the fluorescent structure is part of the crop. b Like a, with white light. c Photo taken under shallow white light to show the remains of what might be reproductive organs. d Line drawing of the structures visible in the b with possible interpretations. e Drawing of the male reproductive organs of Nautilus pompilius (after Sasaki et al. 2010: Fig. 12E)