Source : Webster's Revised Unabridged Dictionary (1913)

Testacea \Tes*ta"ce*a\, n. pl. [NL., fr. L. testaceum a shelled
   anumal. See {Testaceous}.] (Zo["o]l.)
   Invertebrate animals covered with shells, especially
   mollusks; shellfish.

Source : WordNet®

Testacea
     n : testacean rhizopods [syn: {order Testacea}]