Examples from the Web for plastral
Siebenrock's synopsis of living trionychids was based entirely on plastral characters.
The gular scutes, on the anterior edge of the forelobe, become worn long before other plastral laminae do.
The external scutellation of the plastral hinge in adults also differs from that in juveniles.
The smallest female, from Lajitas, having a plastral length of 6.9 centimeters, has a mottled carapace.
The pattern of sculpturing on the plastral bones as well as that of the carapace is generally of anastamosing ridges.