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Entry 1 sense Webster, 1913

Halysites

/(hăl`ĭ*sī"tēz)/ · Hal·y·si·tes · IPA
01 n. A genus of Silurian fossil corals; the chain corals. See Chain coral, under Chain.
  1. 1.
    A genus of Silurian fossil corals; the chain corals. See Chain coral, under Chain.(Paleon.) See: Chain