Dinosaurs in the Bohemia - what was their palaeoenvironment? The dinosaurs remains are extremely rare in Czech Republic and the first evident dinosaur skeletal remains were discovered in 2003 in the Cenomanian (Upper Cretacenous) near-shore marine deposits. Just one footprint known from the Triassic sediments of NE Bohemia has been described before this discovery. Despite of extreme rarity of dinosaur remains, we can exactly reconstruct their living conditions based on knowledges of sedimentology taphonomy, stable isotope analysis, fossil biota assemblage analysis, etc. While the Triassic dinosaur inhabited very dry desert areas, the Late Cretaceous specimen from Kutná Hora vicinity belonged to Mid-European "islanders". The Rheno-Bohemian (Mid-European) Island has been covered by diversified vegetation showing dry and wet periods variations. The climatic seasonality should be proven also by sedimentologic evidence, i.e. strong storm deposits. One of this event buried remains of small ornitopod dinosaur at the Cenomanian beach.