Abstract
Study of thin and polished sections and spectrographic analyses indicate that the brachiopod most recently used to date the Bernardston Formation in Massachusetts probably came from Lower Devonian beds (chlorite zone) in Nova Scotia, and not from Bernardston, Massachusetts. Restudy of the faunule from the calcareous quartzite (garnet zone) of the Bernardston Formation indicates that it is probably of Silurian rather than Devonian age. The upper part of the Clough Formation on Skitchewaug Mountain (garnet zone) in eastern Vermont contains tetracorals of Silurian or Devonian age. The Clough Formation on Croydon Mountain (sillimanite zone) in west-central New Hampshire contains tetracorals. The fossiliferous zone in the lower part of the Bernardston Formation is possibly equivalent to the upper part of the Clough Formation.
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