Petr Hykš:
Carbonised stem/trunk fossil
Petr Hykš:
Carbonised Cycadopsida fossil leaves
Petr Hykš:
Stigmaria ficoides
Petr Hykš:
Stigmaria ficoides
Petr Hykš:
Stigmaria ficoides
Petr Hykš:
Stigmaria ficoides
Petr Hykš:
Lepidodendron?
Petr Hykš:
Nesocalamites?
Petr Hykš:
Embryophyta systematics (after Hermsen 2019 in The Digital Encyclopedia of Ancient Life)
Petr Hykš:
Wollemia nobilis living fossil
Petr Hykš:
Pterophyllum sp. (Cycadopsid) leaves
Petr Hykš:
Cretaceous Magnolia sp. leave imprint (Maletín, Czech republic)
Petr Hykš:
Leknín bělostný (Nymphaea candida)
Petr Hykš:
Victoria amazonica
Petr Hykš:
Ostrolistec kopinatý (Cunninghamia lanceolata)
Petr Hykš:
Carboniferous scenery reconstruction
Petr Hykš:
Jelení jazyk celolistý (Asplenium scolopendrium)
Petr Hykš:
Shark teeth fossils (as found)
Petr Hykš:
Pinopsida indet.
Petr Hykš:
Plavuň (Lycopodium)
Petr Hykš:
Přeslička (Equisetopsida)