| Family | Scientific Name | Author | Year | Common Name |
| Gurgesiellidae | Fenestraja plutonia | (Garman) | 1881 | Underworld Windowskate |
Fenestraja plutonia
Unique Characters: Tip of snout flexible; rostral cartilage distally very slender. 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.
Similar Species: Lightspotted Shortskate Breviraja claramaculata (Family Rajidae). Tip of snout flexible; rostral cartilage distally very slender. Anterior pectoral-fin rays extending nearly to tip of snout. Anterior lobe of pelvic fin 65-80% of posterior lobe. Tail width at base slightly greater than orbit diameter.
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