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Pseudotriakidae : ウィキペディア英語版 | Pseudotriakidae
The Pseudotriakidae are 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. ==Undescribed species== Two as yet undescribed species are known - one in the genus ''Gollum'', (''Gollum'' sp. B) - the white-marked gollumshark, and the Ppygmy false catshark of undetermined genus which may be close to ''Planonasus parini''.〔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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