frontal plate
Modified rostrum of brachyuran decapods which bears downward projection process between antennules that unites with epistome [Moore and McCormick, 1969].
(Order Anostraca):
Clypeus [Stachowitsch, 1992].
(Order Decapoda):
In carapace of crab-like (brachyuran) decapod, modified rostrum which bears downwardly directed process united with ventral epistome [Stachowitsch, 1992].
(Subclass Copepoda):
In parasitic copepod, plate-like structure at anterior end of head; formed by fusion of frontal margin with bases of antennules. Bears pair of suckers (lunules) [Stachowitsch, 1992].
(Infraorder Brachyura):
Modified rostrum with downward projecting process united with epistome [McLaughlin, 1980].
(Order Euphausiacea):
Somewhat extended anterior margin of carapace. (short and triangular, truncate) [Stachowitsch, 1992].

Crustacea glossary. . 2011.

Look at other dictionaries:

  • frontal plate — noun see frontal shield …   Useful english dictionary

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  • frontal plate — (ARTHROPODA: Crustacea) In brachyuran Decapoda, a modified rostrum with a downward projecting process united with the epistome …   Dictionary of invertebrate zoology

  • frontal plate of the tentorium — (ARTHROPODA: Insecta) The plate formed by fused anterior arms of the tentorium …   Dictionary of invertebrate zoology

  • frontal shield — noun also frontal plate : a platelike prolongation of the base of the upper mandible over the forehead that is a characteristic feature of the coots and gallinules …   Useful english dictionary

  • frontal process — n 1) a long plate that is part of the maxillary bone and contributes to the formation of the lateral part of the nose and of the nasal cavity called also nasal process 2) a process of the zygomatic bone articulating superiorly with the frontal… …   Medical dictionary

  • Frontal bone — Bone: Frontal bone Frontal bone highlighted in red Latin os frontale Gray s …   Wikipedia

  • Frontal crest — Bone: Frontal crest Frontal bone. Inner surface. (Frontal crest visible at center but not labeled.) Latin crista frontalis Gray s …   Wikipedia

  • plate — 1. [TA] In anatomy, a thin, relative flat, structure. SYN: lamina [TA]. 2. A metal bar perforated for screws applied to a fractured bone to maintain the ends in apposition. 3. The agar layer within a Petri dish or similar …   Medical dictionary

  • frontal lamina — (Order Isopoda): A sternal plate arising between the bases of the antennae and probably homologous to the epistome of their arthropods; in many isopods the frontal lamina may extend anteriorly to be visible in the dorsal aspect; in many Valvifera …   Crustacea glossary

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