Mesokentriodon is an extinct genus of kentriodontid toothed whale known from the Middle Miocene (Langhian–Serravallian ages) Pisco Formation of Peru.
Etymology In 2026, Olivier Lambert and colleagues named Mesokentriodon protohumboldti as a new genus and species of kentriodontid odontocete (toothed whale) based on two autapomorphies (unique characteristics): a rostrum which was moderately elongated, and 40 teeth in the upper row. The generic name Mesokentriodon derives from the Ancient Greek meso-, meaning intermediate, and the genus Kentriodon. The specific epithet of the type species, M. protohumboldti, contains the prefix proto-, meaning first or before, and references the Humboldt Current in the latter part.
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