Assertion: mastodon | /r/PartOf | extinct genus
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Source sentences:
text: A mastodon (Greek: μαστός "breast" and ὀδούς, "tooth") is any proboscidean belonging to the extinct genus Mammut (family Mammutidae) that inhabited North and Central America during the late Miocene or late Pliocene up to their extinction at the end of the Pleistocene 10,000 to 11,000 years ago.