| Main Ref. | Saruwatari, T., J.A. López and T.W. Pietsch, 1997 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral | elongated |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Diagnosis |
Vomer without posterior process; periphery of glossohyal bone with single row of conical teeth, another row of smaller teeth in center; pyloric caeca 2 (1-5); base of adipose fin more than 20% of head length; adipose eyelid absent. |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | 52 - 59 |
| Pored lateral line scales | 7 - 16 |
| 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 | 8 - 12 |
| on upper limb | 18 - 21 |
| total | 27 - 33 |
| Vertebrae | |
| preanal | 32 - 35 |
| total | 52 - 56 |
| Attributes | |
| Fins number | 1 |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 0 - 0 |
| Soft-rays total | 8 - 11 |
| Adipose fin | present |
| Attributes | forked; more or less normal |
| Fins number | 1 |
| Spines total | 0 - 0 |
| Soft-rays total | 13 - 17 |
| Pectoral | Attributes more or less normal |
| Spines 0 | |
| Soft-rays 9 - 13 | |
| Pelvics | Attributes more or less normal |
| Position abdominal beneath origin of D1 | |
| Spines 0 | |
| Soft-rays 8 - 9 |