Helmolepis

Helmolepis
Temporal range: Early Triassic[1]
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: †Platysiagiformes
Family: †Platysiagidae
Genus: †Helmolepis
Stensiö, 1932
Type species
†Helmolepis gracilis
Stensiö, 1932
Other species
  • †H. cyphognatha Neuman & Mutter, 2005
  • †H. manis Mutter, 2005

Helmolepis is an extinct genus of ray-finned fish that lived during the Early Triassic epoch in what is now Greenland, Madagascar and Canada (British Columbia).[1][2][3][4] Species of Helmolepis are small (between 5 centimetres (0.16 ft) and 8 centimetres (0.26 ft)). This genus is closely related with Platysiagum.

  1. ^ a b Sepkoski, Jack (2002). "A compendium of fossil marine animal genera". Bulletins of American Paleontology. 364: 560. Archived from the original on 2008-04-30. Retrieved 2009-02-27.
  2. ^ Nybelin, Orvar (1977). "Studies on Triassic fishes from East Greenland III. On Helmolepis gracilis Stensiö". Meddelelser om Grønland. 200: 1–13.
  3. ^ Mutter, Raoul J. (2005). "Re-assessment of the genus Helmolepis Stensiö 1932 (Actinopterygii: Platysiagidae) and the evolution of Platysiagids in the Early-Middle Triassic". Eclogae Geologicae Helvetiae. 98 (2): 271–280. doi:10.1007/s00015-005-1164-7. S2CID 128906380.
  4. ^ Neuman, Andrew G.; Mutter, Raoul J. (2005). "Helmolepis cyphognathus, sp. nov., a new platysiagid actinopterygian from the Lower Triassic Sulphur Mountain Formation (British Columbia, Canada)". Canadian Journal of Earth Sciences. 42 (1): 25–36. Bibcode:2005CaJES..42...25N. doi:10.1139/e04-096.