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shelled cephalopods
Größe: H41cm B38cm T18cm
Size: H23cm W33cm D29cm
It refers to a specific chemical compound (silicon dioxide) with a characteristic crystal form
Priscacara sp
SOLD | Fossilisierter Holzstamm Araucarioxylon arizonicum | Arizona, USA Purple shelled cephalopodsOrigin: Arizona, USA Age: Triassic, 220 million years Size: H81cm W43cm L54cm Weight: 338kg Description: This attractive stem of Araucarioxylon arizonicum was cut and trimmed from a larger stem found near Petrified Forest National Park in Arizona. The outer surface is almost entirely covered in fossilized bark, which is an extreme rarity as the softer material is not often preserved. The tree trunk is cut open in cross section and polished to reveal
