Main Ref.	Gallivan, G. and J. Danforth, 1999
Appearance refers to

Sex attributes

specialized organs
different appearance
different colors
remarks

Descriptive characteristics of juvenile and adult

Striking features
Body shape lateral
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
निदान	Description: Shell is dark brown with a hooked backward facing peak (Ref. 312).
Ease of Identification

Meristic characteristics of Crepidula adunca

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)
Gill rakers
on lower limb
on upper limb
सम्पूर्ण
जानवरों की रीड़ का जोड़
preanal
सम्पूर्ण

Fins

Dorsal fin(s)

Attributes
Fins number
Finlets No.	पृष्ठीय
	Ventral
Spines total
Soft-rays total
Adipose fin

Caudal fin

Attributes

Anal fin(s)

Fins number
Spines total
Soft-rays total

Paired fins

Pectoral	Attributes
	spines
	soft-rays
Pelvics	Attributes
	Position
	spines
	soft-rays