Main Ref. | Schaefer, S.A., F. Provenzano, M. de Pinna and J.N. Baskin, 2005 |
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 | eyes absent |
Type of mouth/snout | |
Position of mouth | |
Type of scales | |
Diagnosis |
Diagnosed from all its congeners by the absence of pectoral and anal fins, posterior naris absent, four laterosensory pores on the head, and presence of 9-10 caudal fin rays. Differs from Pygidianops eigenmanni by the absence of eyes (Ref. 56682). |
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 | 6 |
Gill clefts (sharks/rays only) | |
Gill rakers | |
on lower limb | |
on upper limb | |
total | |
Vertebrae | |
preanal | |
total | 35 - 41 |
Attributes | greatly reduced or absent |
Fins number | |
Finlets No. | Dorsal |
Ventral | |
Spines total | 0 - 0 |
Soft-rays total | 0 - 0 |
Adipose fin | absent |
Attributes |
Fins number | |
Spines total | 0 - 0 |
Soft-rays total | 0 - 0 |
Pectoral | Attributes absent |
Spines 0 | |
Soft-rays 0 - 0 | |
Pelvics | Attributes suppressed/absent |
Position absent | |
Spines 0 | |
Soft-rays 0 - 0 |