'Lingula flags' definitions:

Definition of 'Lingula flags'

From: GCIDE
  • lingula \lin"gu*la\ (l[i^][ng]"g[-u]*l[.a]), n.; pl. {lin"gu*l[ae]} (l[i^][ng]"g[-u]*l[=e]). [L., a little tongue.]
  • 1. (Anat.) A tonguelike process or part. [1913 Webster]
  • 2. (Zool.) Any one of numerous species of brachiopod shells belonging to the genus Lingula, and related genera. See Brachiopoda, and Illustration in Appendix. [1913 Webster]
  • Lingula flags (Geol.), a group of strata in the lower Silurian or Cambrian system of Wales, in which some of the layers contain vast numbers of a species of Lingula. [1913 Webster]