[mod.L., f. TETRA- + Gr. καυλό-ς stem + ὀδους ὀδοντ- tooth.] An extinct elephantine genus having four tusks.

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1833.  Baltimore Med. & Surg. Jrnl., Oct. (Mayne).

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1839.  G. Roberts, Dict. Geol., Tetracaulodon, a fossil extinct animal … allied to the mastodon;… having four projecting teeth.

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1859.  Page, Handbk. Geol. Terms (1865), s.v., Professor Owen and others regard the tetracaulodon of Dr. Godman as the immature state of the Mastodon Giganteus.

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