duplicature

plural duplicatures

1. archaicA doubling; a fold, especially of a membrane.

   1 more example

   The genus Saipanetta has been suggested to be a surviving relict of the metacopidan superfamily Healdiacea because of its muscle scar pattern and narrow duplicature; nevertheless, it differs from the Metacopida in its more complex hingement, lack of a distinct contact groove, exaggerated domiciliar asymmetry, and lack of posterior ridges or angulations.

   1978, Philip D. Gingerich, New Condylarthra (Mammalia) from the Paleocene and Early Eocene of North America, page 289