Origin of bicone
Examples from the Web for biconical
Historical Examples of biconical
Fig. 58 shows a biconical whorl with curious and inexplicable characters.
The specimen shown in fig. 64 is biconical, though, as usual, the upper cone is the smallest.
Fig. 66 shows a biconical whorl, and its top is decorated to represent three Swastikas and three burning altars.