angle, premaxillae form an angle < 28° with the lateral edge of rostrum; (1) intermediate angle, form an angle between 30° and 40°; (2) high angle, form an angle > 45°. 91. (0) thin dorsoventrally and porous internally; Premaxillae adjacent to nasal opening: (1) pachyostotic, in direction perpendicular to face, and pachyosteosclerotic but nasals and premaxillae equally project dorsally and anteriorly; (2) extreme pachyostosis, premaxillae adjacent to nasals project farther outward, anteriorly and dorsally. 92. (0) not visible in dorsal view, roofed over by nasals; (1) Proximal ethmoid region: exposed dorsally. 93. (0) forms T-shaped bone with median plate separating right and left Mesethmoid: nasal passages, not all of the dorsal part is divided by median plate; (1) bears expanded posterodorsal plate which is not divided by median plate, median plate situated more ventrally. 94. (0) crescent with apices pointed anteriorly; (1) Shape of soft tissue external nares: crescent with apices pointed posteriorly, might be skewed; (2) rectangular; (3) a longitudinal slit, might be slightly sigmoidal or angled; (4) comma-shaped. 95. (0) separate with two Soft tissue nasal passages distal to bony external nares: separate soft tissue external nares; (1) separate for most of length but confluent just proximal to blowhole; (2) confluent. 96. (0) oriented anterodorsally; (1) Orientation of right soft tissue nasal passages: oriented dorsally. 97. (0) small; (1) hypertrophied to form the spermaceti Right posterior dorsal bursa:
angle, premaxillae form an angle < 28° with the lateral edge of rostrum; (1) intermediate angle, form an angle between 30° and 40°; (2) high angle, form an angle > 45°. 91. Premaxillae adjacent to nasal opening: (0) thin dorsoventrally and porous internally; (1) pachyostotic, in direction perpendicular to face, and pachyosteosclerotic but nasals and premaxillae equally project dorsally and anteriorly; (2) extreme pachyostosis, premaxillae adjacent to nasals project farther outward, anteriorly and dorsally. 92. Proximal ethmoid region: (0) not visible in dorsal view, roofed over by nasals; (1) exposed dorsally. 93. Mesethmoid: (0) forms T-shaped bone with median plate separating right and left nasal passages, not all of the dorsal part is divided by median plate; (1) bears expanded posterodorsal plate which is not divided by median plate, median plate situated more ventrally. 94. Shape of soft tissue external nares: (0) crescent with apices pointed anteriorly; (1) crescent with apices pointed posteriorly, might be skewed; (2) rectangular; (3) a longitudinal slit, might be slightly sigmoidal or angled; (4) comma-shaped. 95. Soft tissue nasal passages distal to bony external nares: (0) separate with two separate soft tissue external nares; (1) separate for most of length but confluent just proximal to blowhole; (2) confluent. 96. Orientation of right soft tissue nasal passages: (0) oriented anterodorsally; (1) oriented dorsally. 97. Right posterior dorsal bursa: (0) small; (1) hypertrophied to form the spermaceti