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» Maine State Fossil: Pertica quadrifaria
   The official state fossil of Maine is this plant which lived in the state 390 milliion years ago, during the Devonian Period and was well preserved as a fossil in volcanic ash.
   http://www.statefossils.com/me/me.html

» Maine's State Fossil
   Information about Pertica quadrifaria, a Devonian plant, and its adoption as the state fossil of Maine.
   http://www.maine.gov/doc/nrimc/mgs/explore/fossils/stfossil.htm