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Page 191
... present ; dorsal fin and pelvic fins typically placed midway along body ; fin rays without true spines ; pectoral fin generally in ventral position . Scales , if present , typically smooth ( cycloid ) . Light organs present in several ...
... present ; dorsal fin and pelvic fins typically placed midway along body ; fin rays without true spines ; pectoral fin generally in ventral position . Scales , if present , typically smooth ( cycloid ) . Light organs present in several ...
Page 472
... present ; ( 7 ) red and blue muds , possibly of volcanic - ash source , may be present ; and ( 8 ) beds commonly range from thin to lam- inated and finely laminated and are not areally extensive . Mixed marine and nonmarine environment ...
... present ; ( 7 ) red and blue muds , possibly of volcanic - ash source , may be present ; and ( 8 ) beds commonly range from thin to lam- inated and finely laminated and are not areally extensive . Mixed marine and nonmarine environment ...
Page 499
... present . The principal distinguishing feature is small , close- ly crowded teeth in series , rounded or somewhat compressed and with 3 or 4 cusps . True nictitating membrane lacking in eye . Development ovoviviparous or viviparous ...
... present . The principal distinguishing feature is small , close- ly crowded teeth in series , rounded or somewhat compressed and with 3 or 4 cusps . True nictitating membrane lacking in eye . Development ovoviviparous or viviparous ...
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