| Main Ref. | Bekker, V.E. and V.G. Prut'ko, 1984 |
| 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 | |
| Type of scales | |
| Diagnosis |
Inner row teeth of lower jaw considerably enlarged and equidistant from one another; dorsal-nasal gland about equal in size to the trunk photophore, not immersed in tissue underlay, aligned sideways and fully disconnected from ventral-nasal gland; suborbital and anterorbital glands and hook-shaped teeth in posterior part of upper jaw missing (Ref. 43965). |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | 34 - 36 |
| 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 | 35 - 35 |
| Attributes | |
| Fins number | 1 |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 0 - 0 |
| Soft-rays total | 15 - 15 |
| Adipose fin | present |
| Attributes | forked; more or less normal |
| Fins number | 1 |
| Spines total | 0 - 0 |
| Soft-rays total | 14 - 15 |
| Pectoral | Attributes more or less normal |
| Spines 0 | |
| Soft-rays 11 - 12 | |
| Pelvics | Attributes more or less normal |
| Position thoracic beneath origin of D1 | |
| Spines 0 | |
| Soft-rays 8 - 8 |