SHARKS

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358 Sharks snout nostril labial furrows snout nostril preoral length spiracle gill slits TECHNICAL TERMS AND MEASUREMENTS (Straight-line distances) dorsal-fin spine (if present) pectoral fin 1 st dorsal fin interdorsal space pelvic fin 2 nd dorsal fin clasper (male sex organ) anal fin keel precaudal pit caudal peduncle prepectoralfin length head trunk tail gill slits mouth pectoral fin trunk total length (caudal fin depressed to body axis) eye diameter interorbital space vent precaudal tail anal fin pelvic fin (female, no claspers) ventral view preanal ridges internasal distance preoral length caudal fin subterminal notch caudal fin mouth width head (lateral view) head (dorsal view) head (ventral view)
Technical Terms and Measurements 359 anterior margin spine base fin origin insertion fin insertion anterior margin dorsal fin base pectoral fin labial furrow mouth corner inner margin labial fold apex posterior margin free rear tip inner margin free rear tip posterior margin apex excurrent aperture nostril upper (dorsal) lobe dorsal margin upper origin lower origin preventral margin lower (ventral) lobe incurrent aperture circumnarial groove incurrent aperture anterior nasal flap posterior nasal flap posterior tip terminal lobe terminal margin subterminal margin subterminal notch upper postventral margin posterior notch caudal fin lower postventral margin ventral tip anterior nasal flap lifted excurrent aperture circumnarial fold nasoral groove mouth head of an orectoloboid shark (ventral view) secondary lower eyelid upper eyelid symphyseal groove anterior nasal flap lower labial furrow upper labial furrow barbel eye notch nictitating lower eyelid subocular pocket
Page 1: click for previous page SHARKS by L
Page 5 and 6: General Remarks 361 few museum spec
Page 7 and 8: Key to Families 363 KEY TO FAMILIES
Page 9 and 10: Key to Families 365 12a. Head with
Page 11 and 12: Key to Families 367 22a. Origin of
Page 13 and 14: List of Families and Species 369 DA
Page 15 and 16: List of Families and Species 371 SP
Page 17 and 18: Hexanchiformes: Chlamydoselachidae
Page 19 and 20: Hexanchiformes: Hexanchidae 375 Key
Page 21 and 22: Squaliformes: Echinorhinidae 377 A
Page 23 and 24: Squaliformes: Squalidae 379 SQUALID
Page 25 and 26: Squaliformes: Squalidae 381 3a. Dis
Page 27 and 28: Squaliformes: Squalidae 383 Squalus
Page 29 and 30: Squaliformes: Squalidae 385 Squalus
Page 31 and 32: Squaliformes: Centrophoridae 387 Sq
Page 33 and 34: Squaliformes: Centrophoridae 389 4a
Page 35 and 36: Squaliformes: Centrophoridae 391 Ce
Page 37 and 38: click for previous page Squaliforme
Page 39 and 40: Squaliformes: Etmopteridae 395 Key
Page 41 and 42: Squaliformes: Etmopteridae 397 List
Page 43 and 44: Squaliformes: Etmopteridae 399 Etmo
Page 45 and 46: Squaliformes: Etmopteridae 401 Etmo
Page 47 and 48: Squaliformes: Somniosidae 403 Squal
Page 49 and 50: Squaliformes: Somniosidae 405 List
Page 51 and 52: Squaliformes: Somniosidae 407 Zameu
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Squaliformes: Oxynotidae 409 Echino
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Squaliformes: Dalatiidae 411 Squali
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Squaliformes: Dalatiidae 413 Dalati
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Squatiniformes: Squatinidae 415 Ord
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Pristiophoriformes: Pristiophoridae
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click for previous page Lamniformes
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Lamniformes: Odontaspididae 421 2a.
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Lamniformes: Odontaspididae 423 Odo
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Lamniformes: Mitsukurinidae 425 A s
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Lamniformes: Alopiidae 427 ALOPIIDA
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Lamniformes: Alopiidae 429 Alopias
Page 75 and 76:
Lamniformes: Cetorhinidae 431 A sin
Page 77 and 78:
Lamniformes: Lamnidae 433 LAMNIDAE
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Lamniformes: Lamnidae 435 List of s
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Lamniformes: Lamnidae 437 Isurus ox
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Lamniformes: Lamnidae 439 Lamna nas
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Orectolobiformes: Ginglymostomatida
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Orectolobiformes: Rhincodontidae 44
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Carcharhiniformes: Scyliorhinidae 4
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Carcharhinidormes: Proscylliidae 45
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Carcharhiniformes: Triakidae 459 Si
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Carcharhiniformes: Triakidae 461 Mu
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Carcharhiniformes: Carcharhinidae 4
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click for previous page Carcharhini
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Page 141 and 142:
click for previous page Carcharhini
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Carcharhiniformes: Sphyrnidae 499 4
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Carcharhiniformes: Sphyrnidae 501 S
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