| Main Ref. | Last, P.R. and W.T. White, 2008 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | other (see Diagnosis) |
| Body shape lateral (shape guide) | other |
| Cross section | flattened |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | sub-terminal/inferior |
| Type of scales | placoid scales |
| Diagnosis |
Body robust, strongly depressed anteriorly, firm. Trunk similarly depressed, almost ray-like, deepest over abdomen. Not tapering abruptly at pelvic-fin insertion, tail strongly depressed, even at origin of caudal fin. Abdomen moderately elongate. Head broad, extended laterally, strongly depressed; oval in cross-section; Pectoral fins very large, expanded, base very fleshy; Pelvic fins large, elongate; Dorsal fins similar in size and shape, somewhat upright, close together; Dermal denticles densely covering entire dorsal surface of body (Ref. 74939). |
| 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 | 134 - 139 |
| Attributes | |
| Fins number | 2 |
| 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 |