| Main Ref. | Conand, C., 1998 |
| Appearance refers to |
| specialized organs | |
| different appearance | |
| different colors | |
| remarks |
| Striking features | |
| Body shape lateral | |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Diagnosis | Body Width: 10 cm. Body thickness: 0.9 cm (Ref. 418); 6mm (Ref. 122). Body elongate, cylindrical, slightly arched dorsally (bivium) and flattened ventrally (trivium). Bivium covered by mucus and fine sediment. Papillae on bivium numerous, long and slender; long and thick podia on trivium arranged more or less regularly in tight rows on the radii; calcareous disc of podia around 700 micrometer in diameter. Mouth ventral, surround by 20 stout tentacles. Anus surrounded by 5 strong, triangular anal teeth. Calcareous ring with large radial pieces and narrow interradials. Cuvierian tubules absent. Color of bivium black; trivium lighter, dark brown. Spicules on ventral tegument with variety of simple or more complicated rosettes; dorsal tegument with rosette; ventral and dorsal podia with some rosettes; podia and papillae containing large spicules; tentacles with large rods. |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | |
| Pored lateral line scales | |
| Scales in lateral series | |
| Scale rows above lateral line | |
| Scale rows below lateral line | |
| Scales around caudal peduncle | |
| Barbels | |
| Gill clefts (sharks/rays only) | |
| Gill rakers | |
| on lower limb | |
| on upper limb | |
| total | |
| Vertebrae | |
| preanal | |
| total |
| Attributes | |
| Fins number | |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | |
| Adipose fin |
| Attributes |
| Fins number | |
| Spines total | |
| Soft-rays total |
| Pectoral | Attributes |
| spines | |
| soft-rays | |
| Pelvics | Attributes |
| Position | |
| spines | |
| soft-rays |