. Cetaceans of the Channel Islands National Marine Sanctuary. Cetacea; Mammals. b. No conspicuous grooves present on throat; definite median notch on rear marijin ot flukes; teeth present [5] Go to 17 13. a. One or two pairs of teeth at or near tip of lower jaw (erupted only m some adults 1. Read note below, then Go to 14 b. One pair ot teeth well behind tip of lower jaw (erupted only in adult males;. Read note below, then Go to 16 Note: Individuals, especially juveniles and adult females, of the species covered in paragraphs 14, 15 and 16 may not be readih' identifiable without museum prepara
. Cetaceans of the Channel Islands National Marine Sanctuary. Cetacea; Mammals. b. No conspicuous grooves present on throat; definite median notch on rear marijin ot flukes; teeth present [5] Go to 17 13. a. One or two pairs of teeth at or near tip of lower jaw (erupted only m some adults 1. Read note below, then Go to 14 b. One pair ot teeth well behind tip of lower jaw (erupted only in adult males;. Read note below, then Go to 16 Note: Individuals, especially juveniles and adult females, of the species covered in paragraphs 14, 15 and 16 may not be readih' identifiable without museum preparation and examination by an expert. 14. a. Two pairs of teeth in lower )aw, one pair exposed outside the closed mouth at tip ot beak, second smaller pair situated behind the first (^teeth erupt late in life for both sexes); bod\' length to ; long, tube-like snout; steep forehead. * Baird's Beaked Whale, Btrardius kairdti (A) b. One pair ot teeth at tip of lower jaw (exposed only m adult males) Go to 15 15. a. Beak distinct, elongated; pronounced bulge to forehead; occa- sionally a second smaller pair of teeth behind primary pair at apex of mandible; maximum body length to about 9 m; north Pacific distribution — tropical. * 'Southern) Bottlenose Whale, Hyperoodon planifrons (T) b. Beak not distinct or elongated; head small relative to body size; forehead scooped (slightly concave) in fi^ont of blowhole, in- creasing in concavity with increasing size; in profile back in- dented behind blowhole; single pair of teeth at tip; united portion of lower jaw [6] less than one-fourth the length of entire lower jaw; mouth line upturned at gape; body coloration lighter on head, grading to all white; body length to m; distribution from south Bering Sea to Equator. * Cu\ier's Beaked Whale, Ztphius cavirostrts (B) 16. a. Moderate beak not sharply demarcated from forehead; males with white convexitj' la "cap" or "beanie" ; in front of blowhole, and white anterior h
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Keywords: ., bookcentury1900, bookcoll, booksubjectcetacea, booksubjectmammals
