旋齿鲨科

{{Automatic taxobox
| taxon = Helicoprionidae
| fossil_range = 早石炭紀-晚二疊紀
| image = Helicoprion reccon.png
| authority = Karpinsky, 1911
| type_species = Helicoprion bessonowi
| type_species_authority = Karpinsky, 1899
| type_genus = 旋齒鯊屬
Helicoprion
| type_genus_authority = Karpinsky, 1899
| subdivision_ranks = 属
| subdivision = 见正文
| synonyms = *Agassizodontidae Zangerl, 1981

参考文献