Pseudotriakidae

Pseudotriakidae
False catshark
(Pseudotriakis microdon)
Slender smooth-hound
(Gollum attenuatus)
Scientific classification
Kingdom:Animalia
Phylum:Chordata
Class:Chondrichthyes
Order:Carcharhiniformes
Family:Pseudotriakidae
T. N. Gill, 1893
Genera[1]

The Pseudotriakidae are a small family of ground sharks, belonging to the order Carcharhiniformes, containing the false catsharks (genera Pseudotriakis and Planonasus) and gollumsharks (genus Gollum). It contains the only ground shark species that exhibit intrauterine oophagy, in which developing fetuses are nourished by eggs produced by their mother.[1]

Undescribed species

Two as yet undescribed species are known - one in the genus Gollum, (Gollum sp. B) - the white-marked gollumshark, and the pygmy false catshark of undetermined genus which may be close to Planonasus parini.[2][3]

References

  1. 1 2 Froese, Rainer, and Daniel Pauly, eds. (2012). "Pseudotriakidae" in FishBase. December 2012 version.
  2. ↑ Compagno, L.J.V., M. Dando and S. Fowler (2005). Sharks of the World. Princeton University Press. pp. 257–260. ISBN 978-0-691-12072-0.
  3. ↑ Weigmann, S., Stehmann, M.F.W. & Thiel, R. (2013): Planonasus parini n. g. and n. sp., a new genus and species of false cat sharks (Carchariniformes, Pseudotriakidae) from the deep northwestern Indian Ocean off Socotra Islands. Zootaxa, 3609 (2): 163–181.


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