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・ Dusky piha
・ Dusky pipefish
・ Dusky pipistrelle
・ Dusky purpletuft
・ Dusky rat
・ Dusky Ridge
・ Dusky robin
・ Dusky seaside sparrow
・ Dusky sergeant
・ Dusky shark
・ Dusky shiner
・ Dusky shrew
・ Dusky slender opossum
・ Dusky smooth-hound
・ Dusky snake eel
Dusky snout catshark
・ Dusky sole
・ Dusky Sound
・ Dusky spinefoot
・ Dusky spinetail
・ Dusky spiny tree-rat
・ Dusky starfrontlet
・ Dusky sunbird
・ Dusky tapaculo
・ Dusky tetraka
・ Dusky thrush
・ Dusky tit
・ Dusky toadlet
・ Dusky tripletooth goby
・ Dusky tube-nosed bat


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Dusky snout catshark : ウィキペディア英語版
Dusky snout catshark


''Bythaelurus naylori'', also known as the Dusky snout catshark is a catshark of the family Scyliorhinidae. This species is found from the Southwest Indian Ridge, southwestern
Indian Ocean. The specimens were collected from 89–1,443 m depth in both bottom trawls and midwater trawls. The shallowest catch record of the new species, possibly at 89 m, came from a midwater trawl. This species can be distinguished from its two closest congeners, ''B. giddingsi'' and ''B. lutarius'', by a combination of prominent comb-like dermal denticles along the upper caudal-fin margin, absence of oral papillae, uniform body coloration, and noticeable dark dusky snout; ''Bythaelurus giddingsi'' has oral papillae present and a variegated color pattern, while ''B. lutarius'' lacks a caudal crest of enlarged denticles and matures at a much smaller size than the new species.
==References==


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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