Orthoceras limestone
Silurian; Beroun, Kosov Quarry
The surface of this limestone bed captures the sea floor during the Silurian period, 423 million years ago. The long conical cephalopod shells were often aligned by water currents.
Rainforest giants
Lepidodenron sp. Carboniferous; Žacléř
The lower part of the trunk of arborescent lycophytes of genus Lepidodendron that grew up to 30 meters high.
Part of a gold-bearing quartz vein
Part of a gold-bearing quartz vein from gold mine in Jílové. It contains an estimated 20 g of gold.
Cross-section of a petrified tree trunk
Stem of tree related to present hazel tree. It was discovered in vulcanic ash beds. Here at the time, vulcanic eruption burried large area of primaeval forest.
Structure of petrified wood
Stem of tree related to present chestnut. It was discovered in sandy-gravel sediments of tertiary river, which flow in a coal swamp.
Lower jaw of a proboscidean
Cast od lower jaw of proboscidean discovered in 1846 during railway construction. Parts of skeleton were deposited in sediments of shallow sea, where the dead animal was transported from land by current.