rostral spine
Median spine resembling a rostrum, adjacent to frontal margin of carapace on shrimps or genus Argis [Butler, T.H.].

Crustacea glossary. . 2011.

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  • rostral spine — a spine of the rostral plate …   Dictionary of ichthyology

  • rostral plate — A flat rostrum [Mauchline, 1984]. Anteriorly projecting, unpaired, movably articulated, median extension of carapace (e.g., Phyllocarida). See: rostrum, compound rostrum [Moore and McCormick, 1969]. (Subclass Phyllocarida): Anteriorly projecting …   Crustacea glossary

  • rostral tooth — See: carapace tooth (g) [Martin, 2005]. (Order Decapoda): See: carapace teeth (g) [McLaughlin, 1980]. (Order Decapoda): One in a series of tooth or spine like projections along anterior extension (rostrum) of carapace. According to position one… …   Crustacea glossary

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  • rostrum — (1) Anteriorly projecting, unpaired, usually rigid median extension of carapace between eyes or ocular peduncles; (2) anterior beaklike projection of valve margins overhanging incisure or notch (Ostracoda); (3) unpaired anteroventral plate of… …   Crustacea glossary

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