| Main Ref. | Trunov, I.A., 1991 |
| 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 | |
| Type of scales | |
| Diagnosis |
Jaws with outer row of numerous minute teeth and closely adjoining inner rows of sparse fang-shaped teeth. Upper jaw with additional inner band of minute teeth, separated from the series of fang-shaped teeth by 3 spaces. Trunk with 120-130 transverse rows of scales. Lower side of head and the lower surface of lower jaw, without scales; second dorsal fin with 57-62 rays. Gill rakers thin, slightly flattened. Abdominal cavity extends to above the base of 13th-14th rays of anal fin. Pyloric caeca 8-11. Paired fins more or less whitish (Ref. 45011). |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | |
| Pored lateral line scales | |
| Scales in lateral series | |
| Scale rows above lateral line | 10 - 11 |
| 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 | 2 |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 0 - 0 |
| Soft-rays total | 68 - 74 |
| Adipose fin | absent |
| Attributes | more or less truncate |
| Fins number | 1 |
| Spines total | 0 - 0 |
| Soft-rays total | 65 - 72 |
| Pectoral | Attributes more or less normal |
| Spines 0 | |
| Soft-rays 28 - 29 | |
| Pelvics | Attributes |
| Position thoracic before origin of D1 | |
| Spines 0 | |
| Soft-rays 7 - 7 |