Source: FAO 2002.
| Family | Scientific Name | Author | Year | Common Name |
| Gurgesiellidae | Fenestraja atripinna | (Bigelow & Schroeder) | 1950 | Blackfin Pygmyskate |
All Fenestra: Anterior and posterior lobes of pelvic fin continuous, connected by series of radials and fin membranes; anterior margin of snout acute to moderately obtuse; tip of snout flexible; rostral cartilage distally very slender; anterolateral margin of ventral side of disc without band of claw-like denticles; anterior pectoral-fin rays extending nearly to tip of snout; anterior lobe of pelvic fin 80-100% of posterior lobe; tail width at base less than orbit diameter; oronasal pits, located anterior to upper jaw and above nasal curtain, absent.
Fenestraja atripinna
Unique Characters: Distance between dorsal fins greater than 100% length of first dorsal-fin base; ventral surface of tail covered with dermal denticles.
Similar Species: Underworld Windowskate, Fenestra plutonia. Distance between dorsal fins less than 100% of first dorsal-fin base; ventral surface of tail not covered with denticles.
Source: FAO 2002.
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