Morphology Data of Esmaeilius persicus
Identification keys
Abnormalities
Main Ref. Teimori, A., H.R. Esmaeili and B. Reichenbacher, 2011
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors
Remarks

Descriptive characteristics of juvenile and adult

Striking features
Body shape lateral fusiform / normal
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

A comparison of the meristic characters reveals that the values obtained from the fossil Aphanius persicus (Priem, 1908) are similar to those obtained from the extant A. persicus (Jenkins, 1910), but that the mean numbers of dorsal-fin rays and pectoral fin rays are lower in the fossil. In addition, differences are recognizable with regard to the scales (size and morphology) and teeth (sizes of lateral cusps). The scales are considerably smaller in the fossil than in the extant species. In addition, the morphology of the scales differs as the radii of the fossil scales are separated from each other in the anterior part of the scale, whereas the radii in the scales of the extant species lack this separation. Moreover, the fossil scales have a lower number of circuli and radii in the anterior field than the scales of the recent species. the comparison of the tricuspid jaw teeth at the premaxillary and dentary reveals that the central cusp is of similar length in the fossil and the extant species, but that the lateral cusps are slightly longer (0.05 mm) in the fossil in comparison with the recent species (0.02–0.03 mm) (Ref. 88150).

Ease of Identification

Meristic characteristics of Esmaeilius persicus

Lateral Lines Interrupted: No
Scales on lateral line
Pored lateral line scales
Scales in lateral series 22 - 29
Scale rows above lateral line
Scale rows below lateral line
Scales around caudal peduncle 8 - 11
Barbels
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total 9 - 13
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes
Fins number
Finlets No. Dorsal   
Ventral  
Spines total
Soft-rays total 10 - 14
Adipose fin

Caudal fin

Attributes

Anal fin(s)

Fins number
Spines total
Soft-rays total 10 - 12

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   14 - 17
Pelvics Attributes  
Position    
Spines     
Soft-rays   5 - 9
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