Oldřich Fatka

Enrollment and thoracic morphology in paradoxidid trilobites from the Cambrian of the Czech Republic

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Condylopyge HAWLE et CORDA, 1847 in the Příbram-Jince Basin (Barrandian area, the Czech Republic, Agnostida)

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Morphologic variability in Lower Palaeozoic acritarchs: importance for acritarch systematics

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