The dusky snout catshark (Bythaelurus naylori) is a species of shark belonging to the family Pentanchidae, the deepwater catsharks. This species is found from the Southwest Indian Ridge, southwestern Indian Ocean. The specimens were collected from 89–1,443 m (292–4,734 ft) depth in both bottom trawls and midwater trawls. The shallowest catch record of the new species, possibly at 89 m (292 ft), 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.[2]
| Dusky snout catshark | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Chondrichthyes |
| Subclass: | Elasmobranchii |
| Order: | Carcharhiniformes |
| Family: | Pentanchidae |
| Genus: | Bythaelurus |
| Species: | B. naylori
|
| Binomial name | |
| Bythaelurus naylori | |
References
edit- ^ Pollom, R.; Ebert, D.A.; Leslie, R.; Weigmann, S. 2019 (2019). "Bythaelurus naylori". IUCN Red List of Threatened Species. 2019: e.T124396124A124552537. Retrieved 13 November 2021.
{{cite journal}}: CS1 maint: numeric names: authors list (link) - ^ Ebert, D.A. & Clerkin, P.J. (2015). "A new species of deep-sea catshark (Scyliorhinidae: Bythaelurus) from the southwestern Indian Ocean" (PDF). Journal of the Ocean Science Foundation. 15: 53–63.
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