Resilifer

A resilifer is a part of the shell of certain bivalve mollusks. It is either a recess (a pit or groove of some sort) or a process, the function of which is the attachment of an internal ligament, which holds the two valves together.

An internal ligament (which requires a resilifer to function) is part of the hinge mechanism in certain taxonomic families of bivalve shells, such as oysters and scallops.^[1]^[2]^[3] A resilifer (and its associated ligament) is the primary structure comprising the type of bivalve hinge that is known as an "isodont" hinge.

References

^ Tutorial Bivalves State University of New York College at Cortland ^{[dead link‍]}
^ J.H. Leal. "Bivalves" (PDF). Florida, USA: Bailey-Matthews Shell Museum.
^ Dr. Burt Carter. "Invertebrate Paleobiology on-line syllabus on Bivalves". Georgia Southwestern State University. Archived from the original on 2020-02-25.

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[1] Tutorial Bivalves State University of New York College at Cortland ^{[dead link‍]}

[2] J.H. Leal. "Bivalves" (PDF). Florida, USA: Bailey-Matthews Shell Museum.

[3] Dr. Burt Carter. "Invertebrate Paleobiology on-line syllabus on Bivalves". Georgia Southwestern State University. Archived from the original on 2020-02-25.

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v t e Bivalve anatomy
Shell	Callus Hinge line Hinge teeth Ligament Lira Lunule Nacre Pallial line Pallial sinus Periostracum Prodissoconch Resilifer Resilium Sculpture Umbo Valve Beak Annuli
Other hard parts	Byssus Pearl Sea silk
Soft parts	Adductor muscles Ctenidium Gastric shield Mantle Nephridium Siphon
Other	Abductin Glochidium Pseudofeces Trochophore Veliger