Assertion: mastodon's molar | /r/HasProperty | lost by the age of 8–10 years
Facets:
Source sentences:
text: The third molars protrude at the age of about one year, grow to a size of 5.2 cm (2.0 in) wide by 14 cm (5.5 in) long and are lost by the age of 8–10 years.