Petr Hykš:
Archaecidaris sea urchin with in situ spines
Petr Hykš:
Comptoniaster michaelisi
Petr Hykš:
Bed full of sea urchin fossils
Petr Hykš:
Astropecten sp. starfish
Petr Hykš:
Rhabdocidaris sp. spine & Terebratulid brachiopod
Petr Hykš:
Crinoid
Petr Hykš:
Paracidaris sp. sea urchin spine
Petr Hykš:
Crinoid stem
Petr Hykš:
Crinoid stem fragments
Petr Hykš:
Calcified crinoid stem
Petr Hykš:
Jurassic sea urchin Collyrites sp.
Petr Hykš:
Crinoid stem imprint
Petr Hykš:
Echinoid spine
Petr Hykš:
Echinoid spine
Petr Hykš:
Echinoid spine
Petr Hykš:
Echinoid spine
Petr Hykš:
Echinoderm spine
Petr Hykš:
Calcified echinoid spine in detritic limestone
Petr Hykš:
Crinoid fossil
Petr Hykš:
Crinoid & Orthoceras fossils
Petr Hykš:
Crinoid limestone
Petr Hykš:
Crinoid fossil
Petr Hykš:
Devonian seabed with crinoid fragments (detail)
Petr Hykš:
Devonian crinoid limestone
Petr Hykš:
Jurassic fossil, possibly porifera/bryozoa/anthozoa (micro-capture, 200x)
Petr Hykš:
Echinoidea spine fossils
Petr Hykš:
Jurassic echinoidea
Petr Hykš:
Jurassic echinoidea
Petr Hykš:
Jurassic echinoidea
Petr Hykš:
Crinoid limestone
