| Main Ref. | Roberts, T.R. and C.J. Ferraris Jr., 1998 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral | elongated |
| Cross section | compressed |
| Dorsal head profile | clearly convex |
| Type of eyes | more or less normal |
| Type of mouth/snout | more or less normal |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
Body with 5 saddles. Snout broadly rounded in lateral profile, without notch. Upper jaw toothless; limited to small symphyseal patch on lower jaw. Gill rakers few in number and nearly indiscernible, except in skeleton preparations. Fourth gill arch with single row of teeth on lower limb. Anal fin with 4-5 simple rays, 11-13 branched rays (Ref. 40780). |
| 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 | 3 - 4 |
| on upper limb | 1 - 1 |
| total | 4 - 5 |
| Vertebrae | |
| preanal | 14 - 15 |
| total | 37 - 38 |
| Attributes | |
| Fins number | 1 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | 1 - 1 |
| Soft-rays total | 6 - 6 |
| Adipose fin | present |
| Attributes | forked; more or less normal |
| Fins number | |
| Spines total | |
| Soft-rays total |
| Pectoral | Attributes more or less normal |
| Spines 1 | |
| Soft-rays 7 - 9 | |
| Pelvics | Attributes more or less normal |
| Position abdominal behind origin of D1 | |
| Spines | |
| Soft-rays |