hingement

plural hingements

1. countableuncountableThe connection between the two halves of a bivalve's shell.

   According to Scott (1961, p. Q84), the hingement of the Kirkbyacea resembles that found in the Kloedenellacea, suggesting a possible relationship between these superfamilies.

   1963, James Charles Melik, The Hingement and Contact Margin Structure of Palaeocopid Ostracodes From Some Middle Devonian Formation of Michigan, Southwestern Ontario, and Western New York., page 58

   2 more examples

   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

   Okubo's illustration (Fig. 17b in [72], p. 425) clearly shows the large anterior hingement tooth on the female. However, he also did not refer to this characteristic or the morphology of the male's hingement in the text.

   2013, Hiroshi Moriyama, Sexual Dimorphism, page 70