n. [ME. heng, hinge; L. mentum, tool]
(ARTHROPODA: Crustacea)
A collective term for the structures comprising articulations of ostracods.

Online Dictionary of Invertebrate Zoology. . 2005.

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  • hingement — (Class Ostracoda): Collective term for structure comprising articulation of valves [McLaughlin, 1980]. (Class Ostracoda): Hinge [Stachowitsch, 1992] …   Crustacea glossary

  • valve — Lateral part of divided carapace commonly joined to opposite part by hingement along dorsal mid line (e.g., Ostracoda, Conchostraca, Leptostraca) [Moore and McCormick, 1969]. Lateral part of divided carapace, commonly joined to opposite part by… …   Crustacea glossary

  • capitulum — n.; pl. la [L. caput, head] 1. A small knoblike protuberance. 2. (ARTHROPODA: Chelicerata) The anterior body region of a mite or tick which bears the mouth parts; the gnathosoma. 3. (ARTHROPODA: Crustacea) a. In Cirripedia, a portion of the… …   Dictionary of invertebrate zoology

  • free margin — (ARTHROPODA: Crustacea) All parts of an ostracod shell margin, except hingement …   Dictionary of invertebrate zoology

  • capitulum — In pedunculate cirripeds portion of carapace enclosing trophic structures, commonly armored by calcareous plates [Moore and McCormick, 1969]. Portion of carapace enclosing body, commonly protected by calcareous plates (lepadomorph cirripeds); or… …   Crustacea glossary

  • free margin — (Class Ostracoda): All parts of margin except hingement [McLaughlin, 1980]. (Class Ostracoda): Margin [Stachowitsch, 1992]. (Class Ostracoda): The perimeter of the valves (exclusive of the hinge region) where valves are in contact [Cohen,… …   Crustacea glossary

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