Kittery Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Kittery Formation
RTOrdovician
 Silurian
 New Hampshire
 Maine
 Merrimack Group
SNOrdovician and Silurian. In Merrimack Group. SW Maine and SE New Hampshire. Indexed with ages as applicable. Added to Thesaurus in 1989.