cephalic constriction — (Subclass Mystacocarida): Constriction delimiting anterior antennulary part of head from posterior part [McLaughlin, 1980]. (Subclass Mystacocarida): Transverse groove dividing head (cephalon) into anterior (antennulary) and posterior parts… … Crustacea glossary
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
cephalic constriction — (ARTHROPODA: Crustacea) In Myastacocarida, a constriction delimiting anterior antennulary part of the head from the posterior part … Dictionary of invertebrate zoology
lobe — (Subclass Mystacocarida): One of four (two anteromedian and two anterolateral = lateral) extension of anterior (antennulary) part of head (cephalon). Anteromedian lobes occasionally termed rostral plate. Configuration of lobes is of taxonomic… … Crustacea glossary
cephalon — A term that refers to the head of a crustacean [Brusca and Brusca, 2002]. Anterior region of the body bearing the antennules, antennae, eyes, mandibles, maxillules, and maxillae [Holdich and Jones, 1983]. Anteriormost tagma, bearing eyes, mouth,… … Crustacea glossary