| Main Ref. | Gill, A.C. and R. Fricke, 2001 |
| Appearance refers to | |
| Bones in OsteoBase |
| 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 | |
| Diagnosi |
Caudal vertebrae, 22-24 (usually 23). Lateral line scales usually 38-41. Anterior lateral line scales 28-35, usually 30-34. |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | 37 - 44 |
| Pored lateral line scales | |
| Scales in lateral series | |
| Scale rows above lateral line | |
| Scale rows below lateral line | |
| Scales around caudal peduncle | 12 - 13 |
| Barbels | |
| Gill clefts (sharks/rays only) | |
| Gill rakers | |
| on lower limb | 2 - 3 |
| on upper limb | 1 - 2 |
| totale | 3 - 5 |
| Vertebre | |
| preanal | |
| totale |
| Attributes | |
| Fins number | 1 |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 1 - 1 |
| Soft-rays total | 25 - 26 |
| Adipose fin | absent |
| Attributes | more or less truncate; more or less normal |
| Fins number | 1 |
| Spines total | 1 - 1 |
| Soft-rays total | 17 - 18 |
| Pectoral | Attributes more or less normal |
| Spines 0 | |
| Soft-rays 13 - 15 | |
| Pelvics | Attributes more or less normal |
| Position thoracic before origin of D1 | |
| Spines 1 | |
| Soft-rays 4 - 4 |