SOLD | Versteinerte Holzplatte | Arizona, USA Ammonite Chemically

Chemically

üblicherweise durch Siliziumdioxid (SiO2) oder Calcit (Calciumcarbonat

Size: H50cm W60cm D32cm

and the last of them disappeared during the mass extinction event about 250 million years ago - making them one of the most successful species that ever lived

• Size: H45cm W90cm D7

SOLD | Versteinerte Holzplatte | Arizona, USA Ammonite ChemicallyOrigin: Arizona, USA Age: Triassic, 220 million years Size: H58cm W53cm D3cm Weight: 14 kg Description: Araucarioxylon arizonicum from the Triassic (approximately 220 million years ago), cut in cross section and polished to show the rich colors so well known from this locality, with the texture preserved at the edges. Additional Information: Petrified wood samples, fossils formed by the infiltration of minerals into the cavities between and within the