Physical Description

Diagnostic Description

Description

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.
  • MASDEA (1997).
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Source: World Register of Marine Species

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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage

Barcode of Life Data Systems (BOLD) Stats
Specimen Records: 31
Specimens with Sequences: 26
Specimens with Barcodes: 21
Species: 5
Species With Barcodes: 4
Public Records: 3
Public Species: 1
Public BINs: 1
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© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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Barcode data

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© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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Wikipedia

Pseudotriakidae

Pseudotriakidae is a small family of ground sharks, belonging to the order Carcharhiniformes, containing the false catsharks and gollumsharks. 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[edit]

There are two as yet undescribed species - one in the genus Gollum, (Gollum sp. B) - the Whitemarked gollumshark, and the Pygmy false catshark of undetermined genus which may be close to Planonasus parini.[2][3]

References[edit]

  1. ^ a b 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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