Definitions

Hinge line

• Mid-dorsal line of junction of two valves composing carapace, permitting movement between them (e.g., Conchostraca, Ostracoda, Phyllocarida). [Moore and McCormick, 1969]
• Middorsal line of junction of two valves of carapace, permitting movement between them. [McLaughlin, 1980]
• Longitudinal middorsal line of carapace. Considered either to mark connection of two valves of carapace or to represent thinner and most flexible region of continuous shield. (straight, in an arc). [Stachowitsch, 1992]

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Citing this glossary: For individual definitions, please cite the specific author(s) of the definition.
To cite the glossary as a whole, please use:
Martin, J.W., N.D. Pentcheff, D. Striley, C. Perrodin, A.R. Wall, J. Wall, and J. Zieba (editors). Crustacea Glossary. Crustacea Department, Natural History Museum of Los Angeles County. Accessed: 31 Mar 2025. URL: https://research.nhm.org/glossary