Fadenia

Fadenia is an extinct genus of eugeneodontid holocephalian chondrichthyan from the Carboniferous Period of Missouri (United States), the Permian period of Greenland, and the Early Triassic epoch of Greenland and Sulphur Mountain Formation of British Columbia, Canada.[2][3]

Fadenia
Temporal range: Carboniferous – Early Triassic) 320–247.2 Ma
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Order: †Eugeneodontida
Family: †Caseodontidae
Genus: †Fadenia
Nielsen, 1932
Type species
†Fadenia crenulata
Nielsen, 1932
Species
  • †F. uroclasmato
  • †F. gigas
Early Triassic and Middle Triassic marine predators: 2. Fadenia[1]

Eugeneodontida are an extinct order of Chondrichthyes. They are characterized by the presence of tooth whorls. They include iconic genera, such as Helicoprion (buzz-saw shark), Ornithoprion, Edestus or Caseodus. Fadenia is one of the few eugeneodontid genera that survived the end-Permian mass extinction event. It is one of the last surviving genera of this clade. It could reach about 1.5 metres (4.9 ft) in length.

References
  1. Scheyer et al. (2014). "Early Triassic Marine Biotic Recovery: The Predators' Perspective". PLoS ONE.
  2. Mutter, R. J. & Neuman, A. G. (2008). "New eugeneodontid sharks from the Lower Triassic Sulphur Mountain Formation of Western Canada". In: Fishes and the Break-up of Pangaea. Cavin, L.; Longbottom, A. & Richter, M. editors. Geological Society of London, Special Publications. 295: 941
  3. http://fossilworks.org/?a=taxonInfo&taxon_no=34456

Further reading
  • Bendix-Almgreen, S. E. (1975). "Fossil fishes from the marine Late Palaeozoic of Holm Land – Amdrup Land, north-east Greenland". In: Meddelelser om Grønland. 195: 3–38.
  • Ginter, M.; Hampe, O. & Duffin, C. J. (2010). "Chondrichthyes. Paleozoic Elasmobranchii: Teeth". Handbook of Paleoichthyology. Volume 3D: 1–168.
  • Nielsen, E. (1932). "Permo-Carboniferous fishes from east Greenland". In: Meddelelser om Grønland. 86 (3): 1–63.
  • Nielsen, E. (1952). "On new or little known Edestidae from the Permian and Triassic of East Greenland". Meddelelser om Grønland. 144: 1–55.



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