SOLD | Versteinerte Holzplatte | Arizona, USA Ammonite Chemically

Chemically

offering valuable insights into the animal's anatomy and structure

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

The limestone has been quarried for hundreds of years

Description: The Goniatites (Goniatitida

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