Assertion: gopher tortoise's shell | /r/HasProperty | plastron
Facets:
Source sentences:
text: Adult female gopher tortoises are slightly larger than males, and at maturity, male tortoises can usually be distinguished from females by a concave lower shell (plastron).
text: The most remarkable thing about most turtles is their unique exoskeleton which is composed of an upper shell, the carapace and a lower shell, the plastron.
text: The under shell (plastron) is unhinged, dull yellowish in color, with the soft parts grayish brown.
text: ’s shell (plastron) is concave, and the female’s plastron is flat.
text: The bottom of a male gopher tortoise's shell (plastron) is concave, and the female's plastron is flat (Hill, 2001).