Described as treasures by the Polish Geological Institute—National Research Institute, the fossil tracks and bones were found in an open-earth quarry at Borkowice, 130 kilometers (80 mi) south of Warsaw.
“In the traces left by dinosaurs, you can read their behavior and habits … We have traces of dinosaurs running, swimming, resting and sitting,” said geologist Grzegorz Niedzwiedzki.
The largest footprints of carnivorous dinosaurs are 40 cm (15.7 in) long and in many cases the skin can be seen in detail.
“For such a state of conservation to be possible, a very particular sequence of events had to happen over a short period of time,” geologist Grzegorz Pienkowski said in a statement.
Several hundred dinosaur tracks, representing at least seven species, have been found and geologists say they are likely to find more. They have also discovered bone fragments from animals and fish.