frontal
131frontal shield — (BRYOZOA: Gymnolaemata) In Cheilostomata, the skeletal structure of the frontal or body wall that supports and protects the retracted organs of an autozooid …
132frontal appendage — One pair of filaments arising in many Anostraca from bases of antennae but independent of them; may be ramified [Moore and McCormick, 1969]. (Order Diplostraca): Frontal organ [Stachowitsch, 1992]. (Order Anostraca): Paired filaments arising from …
