Petrified conifer, longitudinal wood slice from Arizona, Araucaria, petrified wood

A fossilized coniferous tree longitudinal section from Arizona, paleobotanically identified as Araucaria. A slab of architectural wall-dimensions, cut along the trunk axis.

Longitudinal sections of fossilized conifers reveal the growth structure along the trunk axis. Annual rings appear as parallel bands, and vascular bundles run vertically. The cross-section documents the trunk anatomy of a Triassic tree over its full length.

Araucaria is a characteristic conifer genus of the Triassic period and an ancestor of today's monkey puzzle trees. Petrified wood from Arizona comes from the Chinle Formation, dating back approximately 225 million years. Groundwater containing silicic acid molecularly replaced the organic matter with quartz and agate.

The slab format is suitable for wall display or pedestal mounting. The polished cut surface fully highlights the mineralization pattern of iron, manganese, and quartz phases.

A paleontological museum-quality collector's item with documented Triassic provenance and gallery wall dimensions.