. Cetaceans of the Channel Islands National Marine Sanctuary / prepared for National Oceanic and Atmospheric Administration, Channel Islands National Marine Sanctuary and NOAA, National Marine Fisheries Service by Stephen Leatherwood, Brent S. Stewart, Pieter A. Folkens. Whales California Channel Na 1, Monodon monoceros (P). 24. a. Head blunt Go to 25 b. Head long and conical; no demarcation of rostrum from melon; cape very narrow except for slight widening beside dorsal fin; 20-27 teeth in each upper and lower jaw; crowns of teeth often marked with many fine vertical wrinkles; maxim
. Cetaceans of the Channel Islands National Marine Sanctuary / prepared for National Oceanic and Atmospheric Administration, Channel Islands National Marine Sanctuary and NOAA, National Marine Fisheries Service by Stephen Leatherwood, Brent S. Stewart, Pieter A. Folkens. Whales California Channel Na 1, Monodon monoceros (P). 24. a. Head blunt Go to 25 b. Head long and conical; no demarcation of rostrum from melon; cape very narrow except for slight widening beside dorsal fin; 20-27 teeth in each upper and lower jaw; crowns of teeth often marked with many fine vertical wrinkles; maximum body length m. * Rough-toothed dolphin, Steno hreianensis (B/T) 25. a. Teeth (2-7 pairs) usually at front end of lower jaw only, (teeth rarely in upper jaw); all teeth from lower jaw of older specimens may be absent or extensively worn; forehead with median crease; dorsal fin tall, to cm and distinct; maximum body length m. * Risso's dolphin, Grampus griseus (A) b. Teeth (7 or more pairs) in both upper and lower jaws; forehead with no median crease Go to 26. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Leatherwood, Stephen; Stewart, Brent Scott; Folkens, Pieter A; Channel Islands National Marine Sanctuary (Agency : U. S. ); United States. National Marine Fisheries Service. Santa Barbara, Calif. : The Sanctuary
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