Assertion: plesiosaur | /r/HasProperty | retained its upper jaws
Facets:
value: at the existing degree of decomposition
type: OTHER
value: probably
type: DEGREE
Source sentences:
text: -- At the existing degree of decomposition, a plesiosaur would probably have retained its upper jaws and teeth (Hasegawa and Uyeno 1978, p 63), but no teeth were reported in the specimen carcass (Obata and Tomoda 1978, p 48).