Eurypterus


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Eu`ryp´te`rus


n.1.(Paleon.) A genus of extinct Merostomata, found in Silurian rocks. Some of the species are more than three feet long.
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(1) 0.5 + m--microlaminated, silty, argillaceous eurypterid-dolostone with Eurypterus remains, nautiloids, and ostracods (Herrmannina).
The Rootsikula Stage in Saaremaa consists of shallow-water sediments: finely laminated lagoonal dolomites with Eurypterus, bioturbated dolomites, laminated stromatolites, biomorphic and coarse-grained limestones.