Beaked Whale Identification Guide
Tooth position
A single pair of anteriorly inclined teeth are positioned at apex of the mandible.

Tooth exposure
Nearly all of erupted teeth in adult males are exposed above the gumline, Teeth do not erupt in females or juveniles.

Tooth shape
Teeth are oval in cross section and much less transversely flattened than other Mesoplodon species.
Mesoplodon mirus - Right medial tooth
Adult male - USNM 571357
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