Petrified Branch - Full Slice fulgurite Since John Adams took up

Since John Adams took up residence on November 1st

Each fossil tooth includes a small information card about the specimen

LIMITED AVAILABILITY

Space Shuttle: Developing an Icon: 1972-2013

The rather simple

Petrified Branch - Full Slice fulgurite Since John Adams took upAbove: Front of Specimen Card "When the plant deposits are as thoroughly explored as the animal deposits have been, stratigraphic geology will receive much valuable aid." ~ Frank Hall Knowlton, USGS Botanist, 1889. Petrified wood is a unique type of fossil that preserves the impressions of the organic material down to a cellular level. The most common plant fossils are often only impressions of anatomical details left upon soft earth during