supraanal plate

supraanal plate
Portion of notostracan telson, usually tongue-shaped but may be spatulate to round; produced backward on dorsal side as a plate [Moore and McCormick, 1969].
(Order Notostraca):
posteriorly directed median extension of telson. (simple, bilobed; with/without median keel; median spines place on/not place on keel) [Stachowitsch, 1992].
(Order Notostraca):
Tongue-shaped, spatulate, or rounded plate produced posteriorly on dorsal side of telson [McLaughlin, 1980].
(Subclass Mystacocarida):
Unpaired median projection extending from posterodorsal end of last segment (telson). Posterior end characterized by large seta (major seta) and, ventral to it, variously shaped process with minute spines. Flanked on each side by spinous process. (Syn. supra-anal process) [Stachowitsch, 1992].

Crustacea glossary. . 2011.

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  • seta — A cuticular hair arising from the outside of the exoskeleton [Warner, 1977]. A cuticular outgrowth having recognizable basal articulation [Ingle, 1992]. A cuticular process that is clearly articulated with the basal cuticle. This structure comes… …   Crustacea glossary

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