Assertion: narwhal's teeth | /r/HasProperty | erupted
Facets:
Source sentences:
text: According to Grzimek's: Belugas have rows of eight or nine simple, peg-like teeth in both upper and lower jaws, while narwhals have no erupted teeth within the buccal cavity.
text: Some odontocetes have only vestigial teeth buried in their jawbones; others have teeth that are erupted, in numbers varying from 1 in the narwhal to more than 240 in the franciscana, or La Plata river dolphin.