Articulata

Articulata \Ar*tic`u*la"ta\ ([aum]r*t[i^]k`[-u]*l[=a]"t[.a]), n.
   pl. [Neut. pl. from L. articulatus furnished with joints,
   distinct, p. p. of articulare. See {Article}, v.] (Zool.)
   1. One of the four subkingdoms in the classification of
      Cuvier. It has been much modified by later writers.
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   Note: It includes those Invertebrata having the body composed
         of a series of ringlike segments (arthromeres). By some
         writers, the unsegmented worms (helminths) have also
         been included; by others it is restricted to the
         Arthropoda. It corresponds nearly with the Annulosa of
         some authors. The chief subdivisions are Arthropoda
         (Insects, Myriapoda, Malacopoda, Arachnida,
         Pycnogonida, Crustacea); and Anarthropoda, including
         the Annelida and allied forms.
         [1913 Webster]

   2. One of the subdivisions of the Brachiopoda, including
      those that have the shells united by a hinge.
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   3. A subdivision of the Crinoidea.
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Encrinoidea \En`cri*noid"e*a\, n. pl. [NL. See {Encrinus} and
   {-oid}.] (Zo["o]l.)
   That order of the Crinoidea which includes most of the living
   and many fossil forms, having jointed arms around the margin
   of the oral disk; -- also called {Brachiata} and
   {Articulata}. See Illusts. under {Comatula} and {Crinoidea}.
   [1913 Webster]