from the GNU version of the Collaborative International Dictionary of English
- adj. Designating, or pertaining to, certain beds, chiefly limestone, characteristic of the latest period of the Silurian age.
from The Century Dictionary and Cyclopedia
- n. In the geology of New York, an arenaceous or calcareo-arenaceous member of the rock series, in the eastern part of the State lying above the Helderberg limestones and below the Esopus and Schoharie grits, in the western part lying above the Waterlime series, with which it is unconformable, and beneath the Onondaga limestone.
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