Fig. 6

Reconstruction of the internal anatomy of Subplanites as it came to rest on the sediment. Note that the interpretations of some organs such as the reproductive organ, the central nervous system, the hyponome and the gills are a matter of debate and represent only one possible interpretation out of several. The coiling of the soft parts corresponds to the coiled body chamber (ca. 300°), which was probably altered when these soft parts sank onto the sediment and came to a rest. a Reconstructed as in the fossil. b Organs arranged according to the conch in Fig. 3