median articulated spine
Projection of telson in eocarids, seemingly not homologous with skeletal structure of any extant crustacean [Moore and McCormick, 1969].

Crustacea glossary. . 2011.

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  • spine — ( ) [Baba, 2005]. Carapace, spines, based on Munida. [Baba, 2005] ( ) [Baba, 2005]. Anterior part of carapace, including ocular peduncles, based on Munidopsis. [Baba, 2005] A cuticular outgrowth without a recognizable basal articulation [Ingle,… …   Crustacea glossary

  • skeleton — skeletonless, adj. skeletonlike, adj. /skel i tn/, n. 1. Anat., Zool. the bones of a human or an animal considered as a whole, together forming the framework of the body. 2. any of various structures forming a rigid framework in an invertebrate.… …   Universalium

  • 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

  • Orbital part of frontal bone — Frontal bone. Outer surface. (The Pars orbitalis is the bottom third.) F …   Wikipedia

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  • Thumb — For other uses, see Thumb (disambiguation). Thumb The Thumb. Latin pollex, digitus primus, digitus I Artery …   Wikipedia

  • Sacrum — For other uses, see Sacrum (disambiguation). Not to be confused with cecum. Bone: Sacrum Sacrum, pelvic surface …   Wikipedia

  • Foramen — A natural opening. Although a foramen is usually through bone, it can be an opening through other types of tissue, as with the foramen ovale. * * * An aperture or perforation through a bone or a membranous structure. SYN: trema (1). [L. an… …   Medical dictionary

  • caudal ramus — One of paired appendages constituting caudal furca, usually rodlike or bladelike, sometimes filamentous and multiarticular. (Syn. caudal filament, caudal style, cercus, cercopod, furcal ramus, stylet) [McLaughlin, 1980]. Single appendage of… …   Crustacea glossary

  • chondrostean — ▪ fish Introduction       any member of a group of primitive ray finned bony fishes (bony fish) that make up one of the three major subdivisions of the superclass Actinopterygii, the other two being the holosteans (holostean) and the teleosts… …   Universalium

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