Taxonomic revision of the Paradoxididae Hawle and Corda, 1847 from the Miaolingian (Cambrian) of the Holy Cross Mountains, Poland: a morphometric approach to simply deformed trilobites

The taxonomy of simply deformed paradoxidids from the Miaolingian (Cambrian) Slowiec Hill, Holy Cross Mountains, Poland, is revised based on morphometric analysis. material represents two species: Acadoparadoxides slowiecensis (Czarnocki in Orlowski, 1965) and Hydrocephalus ? polonicus 1965). A new assemblage zone combined although not precisely known ranges these taxa suggested replacing previous Paradoxides Zone Orlowski (1975, 1988, 1992a). The slowiecensis–Hydrocephalus Assemblage corresponds to middle upper part Wuliuan Stage (lower Miaolingian).