| Main Ref. | Larson, H.K., R. Foster, W.F. Hunphreys and M.I. Stevens, 2013 |
| 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 | terminal |
| Type of scales | |
| Diagnosis |
First dorsal fin absent (remnant of single pterygiophore present in CT-scanned specimen), 6 segmented second dorsal fin rays; 6-7 segmented anal fin rays; pelvic fin rays I,3; 13-15 caudal fin rays; caudal and pectoral fin rays all unbranched; an almost naked body with greatly reduced scalation (single row of few cycloid scales present), head short with reduced numbers of rows of sensory papillae on the head and body; vertebrae 7-9+13-15 (22 in total), one pre-anal pterygiophore, one epural, last haemal spine broad, split, with sheet of bone joining forks (Ref. 93018). |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | 2 - 8 |
| 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 | 22 - 22 |
| Attributes | |
| Fins number | |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | 6 - 6 |
| Adipose fin |
| Attributes |
| Fins number | |
| Spines total | |
| Soft-rays total | 6 - 7 |
| Pectoral | Attributes |
| Spines | |
| Soft-rays 12 - 13 | |
| Pelvics | Attributes |
| Position abdominal | |
| Spines 1 | |
| Soft-rays 3 - 3 |