plastral

[plas-truh l]

adjective Zoology.

Origin of plastral

First recorded in 1885–90; plastr(on) + -al¹

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Variation and relative growth in the plastral scutes of the turtle Kinosternon integrum LeConte.
The Amphibians and Reptiles of Michoacn, Mxico
William E. Duellman
The external scutellation of the plastral hinge in adults also differs from that in juveniles.
Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz
John M. Legler
The gular scutes, on the anterior edge of the forelobe, become worn long before other plastral laminae do.
Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz
John M. Legler
Siebenrock's synopsis of living trionychids was based entirely on plastral characters.
North American Recent Soft-shelled Turtles (Family Trionychidae)
Robert G. Webb
The pattern of sculpturing on the plastral bones as well as that of the carapace is generally of anastamosing ridges.
North American Recent Soft-shelled Turtles (Family Trionychidae)
Robert G. Webb