Study of fossil plants that were found during construction work of the Eastern Ljubljana motorway at Bizovik demonstrated that similar plants flourished in the uniform Euroamerican floristic area that extended in the Late Carboniferous from the present NorthAmerica across Europe to Asia. The collected fossil flora consists predominantly of Pteridophyta, represented by Equisetopsida, Lycopodiopsida and Polypodiopsida. Gymnospermae are also present, represented by Pteridospermopsida and Cordaitanthales