Ly`o*po"ma*ta (?), n. pl. [NL., fr. Gr. to loose + , , a lid.] Zool.

An order of brachiopods, in which the valves of shell are not articulated by a hinge. It includes the Lingula, Discina, and allied forms.

[Written also Lyopoma.]

 

© Webster 1913.

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