Assertion: mastodon's tusk | /r/HasProperty | worn
Facets:
value: usually
type: DEGREE
value: very
type: DEGREE
Source sentences:
text: The age of a mammoth can be roughly determined by counting the growth rings of its tusks when viewed in cross section, but this does not account for its early years, as these are represented by the tips of the tusks, which are usually worn away.
text: Boxes upon boxes filled with the fossilized remains of a mastodon that died in Virginia more than 18,000 years ago are being hauled up the steps to Virginia Commonwealth University’s Virtual Curation Laboratory, where the massive Ice Age animal’s fossils — including the tip of a tusk, a very worn tooth, toe bones, a rib bone and a mandible — are slated to be 3-D scanned.
text: The age of a mammoth can be roughly determined by counting the growth rings of its tusks when viewed in cross section, but this does not account for their early years, as these are represented by the tips of the tusks, which are usually worn away.