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Technical Terms and Measurements 359<br />

anterior<br />

margin<br />

spine<br />

base<br />

fin origin insertion<br />

fin insertion<br />

anterior<br />

margin<br />

dorsal fin<br />

base<br />

pectoral fin<br />

labial furrow<br />

mouth corner<br />

inner<br />

margin<br />

labial fold<br />

apex<br />

posterior<br />

margin<br />

free<br />

rear tip<br />

inner<br />

margin<br />

free rear<br />

tip<br />

posterior<br />

margin<br />

apex<br />

excurrent aperture<br />

nostril<br />

upper (dorsal) lobe<br />

dorsal margin<br />

upper origin<br />

lower origin<br />

preventral margin<br />

lower (ventral) lobe<br />

incurrent<br />

aperture<br />

circumnarial groove<br />

incurrent<br />

aperture<br />

anterior<br />

nasal flap<br />

posterior<br />

nasal flap<br />

posterior tip<br />

terminal lobe<br />

terminal<br />

margin<br />

subterminal margin<br />

subterminal notch<br />

upper postventral margin<br />

posterior notch<br />

caudal fin<br />

lower postventral margin<br />

ventral tip<br />

anterior nasal flap lifted<br />

excurrent aperture<br />

circumnarial fold<br />

nasoral groove<br />

mouth<br />

head of an orectoloboid shark<br />

(ventral view)<br />

secondary<br />

lower<br />

eyelid<br />

upper eyelid<br />

symphyseal groove<br />

anterior nasal flap<br />

lower labial furrow<br />

upper labial furrow<br />

barbel<br />

eye<br />

notch<br />

nictitating<br />

lower<br />

eyelid<br />

subocular<br />

pocket

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