Assertion: tortoise's plastron | /r/HasProperty | concave
Facets:
value: in males
type: OTHER
value: usually
type: DEGREE
Source sentences:
text: Male tortoises' plastron (the shell on their underside) is usually concave, or curved inward.
text: > Male tortoises can be distinguished from female tortoises by their concave plastron (bottom shell).
text: Sexual dimorphism is evident, with the male gopher tortoise having a concave plastron, while that of the female is flat.
text: > Male tortoises can be distinguished from female tortoises by their concave plastron (bottom shell).
text: Both males and females have a thick, heavy shell, but a female's shell is more domed than the male's, and the plastron is concave in males.