Note 20 — APPENDIX C STRANDED WHALES, DOLPHINS, AND PORPOISES With a Key to the Identification of Stranded Cetaceans of the Western North Atlantic
Reading edition
By feeling between the lower jaws on the ventral surface and moving the finger forward towards the tip of the snout, one can feel the point at which the two lower jaws become united (called the symphysis). This location is an important reference point in distinguishing among the species separated in paragraphs 14, 15, and 16.