Morphology Data of Sphyrna mokarran
Identification keys
Abnormalities
Main Ref. Myers, R.F., 1991
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 elongated
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth sub-terminal/inferior
Type of scales placoid scales
Diagnosis

A very large hammerhead also with a notch at the center of the head (Ref. 5578). Front margin of head gently curved in juveniles, becoming nearly straight in adults, with slight median notch (Ref. 26938). 1st dorsal fin very high and curved; 2nd dorsal and pelvic fins high and with deeply concave rear margins. Light grey or grey-brown above, white below; fins without conspicuous markings (Ref. 5578).

Ease of Identification

Meristic characteristics of Sphyrna mokarran

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) 5
Gill rakers
on lower limb
on upper limb
total
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes
Fins number 2
Finlets No. Dorsal   0 - 0
Ventral  0 - 0
Spines total 0 - 0
Soft-rays total 0 - 0
Adipose fin absent

Caudal fin

Attributes heterocercal; more or less normal

Anal fin(s)

Fins number 1
Spines total 0 - 0
Soft-rays total 0 - 0

Paired fins

Pectoral Attributes  more or less normal
Spines     0
Soft-rays   0 - 0
Pelvics Attributes  more or less normal
Position    abdominal  behind origin of D1
Spines     0
Soft-rays   0 - 0
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Garilao, Cristina V.
Modified by Bailly, Nicolas
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cfm script by eagbayani, 17.10.00, php script by rolavides, 13/03/08 ,  last modified by sortiz, 06.27.17