The Virtual Petrified Wood Museum.  Dedicated to the Exhibition and Educational Study of Permineralized Plant Material
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Tree Fern
Grammatopteris freitasii
Bieland, Maranhao Province, Brazil
Pedra de Fogo Formation
20 cm x 19.5 cm
Close-up showing small stele with pith and xylem ring surrounded by initial leaf and root traces in Grammatopteris freitasii.
Stem and root traces within the mantle of Grammatopteris freitasii can be seen below.
Preserved xylem tissue at the center of the rootlets in Grammatopteris freitasii can be seen in the close-up below.

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