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Taxonomic position of the brachiopod genus Euorthisina HAVLÍ EK 1950 from the Ordovician of the Prague Basin (Czech republic) was subjected to wide discussions and disputes in the past. The genus was first classified within the superfamily Syntrophiiacea (order Pentamerida). Later, a separate family Euorthisinidae by Havlí ek (1977) was defined. At present, the family is assigned to the order Orthida and includes genera Euorthisina HAVLÍ EK, 1950, Lesserorthis BENEDETTO, 2007, Notorthisina HAVLÍ EK & BRANISA, 1980 and Protorthisina BENEDETTO, 2007. In this thesis, a revision of genus Euorthisina HAVLÍ EK 1950 with emphasis on taxonomic classification, palaeoecology and palaeogeographic occurrence of species E. moesta and E. minor described from the Ordovician of the Prague Basin has been made. Klí ová slova: Euorthisina, brachiopoda, Ordovician, Prague Basin, Czech republic. |
