Delthyris

Del`thy´ris


n.1.(Zool.) A name formerly given to certain Silurian brachiopod shells of the genus Spirifer.
Delthyris limestone
(Geol.) one of the divisions of the Upper Silurian rocks in New York.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
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