| Main Ref. | McEachran, J.D. and J.D. Fechhelm, 1998 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | striking fins |
| Body shape lateral | elongated |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | other (see remarks) |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
Upper pectoral rays thickened and elongated and separated from lower rays; interior pelvic rays and lower caudal fin rays greatly elongated. |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | 48 - 55 |
| 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 | 22 - 28 |
| on upper limb | 10 - 12 |
| total | |
| Vertebrae | |
| preanal | |
| total | 49 - 52 |
| Attributes | |
| Fins number | 1 |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 0 - 0 |
| Soft-rays total | 11 - 13 |
| Adipose fin | present |
| Attributes | other (see remark) |
| Fins number | 1 |
| Spines total | 0 - 0 |
| Soft-rays total | 8 - 10 |
| Pectoral | Attributes other (see remarks) |
| Spines 0 | |
| Soft-rays | |
| Pelvics | Attributes other (see remarks) |
| Position abdominal behind origin of D1 | |
| Spines 0 | |
| Soft-rays 8 - 8 |