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| Pseudobiceros | |
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_on_Polycarpa_aurata_(Seasquirt).jpg)
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| Pseudobiceros gloriosus on Polycarpa aurata | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Platyhelminthes |
| Order: | Polycladida |
| Suborder: | Cotylea |
| Family: | Pseudocerotidae |
| Genus: | Pseudobiceros Faubel, 1984[1] |
Pseudobiceros is a genus of flatworms. Like all flatworms, Pseudobiceros are hermaphrodites. This particular genus engages in penis fencing. When the "winner" touches its penis to the "skin" of the other, insemination occurs, and the "loser" has to bear the burden of motherhood.[2][3]
- ^ Faubel, A. (1984). "The Polycladida, Turbellaria; Proposal and establishment of a new system. Part 2. The Cotylea". Mitteilungen aus dem Hamburgischen Zoologischen Museum und Institut. 81: 189–259.
- ^ Michiels, N.K., and L.J. Newman. (1998). Sex and violence in hermaphrodites. Nature 391:647.
- ^ Hermaphrodites duel for manhood, Science News Online. Accessed 14 March 2009.
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