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Pseudotriakidae

provided by wikipedia EN

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

One undescribed species is known - one in the genus Gollum, (Gollum sp. B) - the white-marked gollumshark.[2][3]

References

  1. ^ a b Froese, Rainer, and Daniel Pauly, eds. (2012). "Pseudotriakidae" in FishBase. December 2012 version.
  2. ^ Compagno, L.J.V.; M. Dando & 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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Pseudotriakidae: Brief Summary

provided by wikipedia EN

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.

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Description

provided by World Register of Marine Species
Big deep-water bottom-dwelling shark of the continental and insular slopes from 200 to 1500 m. Found in all oceans from Madagascar to Taiwan and Hawaii, and to Iceland. A large, bulky, dar-brown, soft-bodied shark with elongated, catlike eyes and nictitating eyelids, large spiracles, a huge, wide, angular mouth that reaches behind eyes, very short labial furrows, numerous small cuspidate teeth in 200 or more rows in each jaw. Two large spineless dorsal fins and an anal fin, the first dorsal fin being low, long and keel-like. Caudal fin with a strong ventral lobe. Ovoviviparous, with litters of 2 to possibly 4 young. Probably feeds on a variety of deepwater bony fishes, elasmobranchs and invertebrates.
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bibliographic citation
MASDEA (1997).
Contributor
Edward Vanden Berghe [email]