Assertion: mastodon's remain | /r/HasProperty | preserved
Facets:
value: often
type: DEGREE
value: very well
type: DEGREE
value: poorly
type: DEGREE
Source sentences:
text: Mastodons had a worldwide distribution; their remains are quite common and are often very well preserved.
text: Mastodons were widely distributed throughout the world, and their remains are fairly common and well-preserved.
text: But hard remains of animals are rarely preserved, difficult to find, and laborious to accurately date because of physical degradation, the scientists said in a statement today.
text: Hatcher recovered hundreds of bones and teeth, although the remains were poorly preserved, disarticulated and often from animals who weren't fully grown.