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Late Cambrian protolith age of the Młynowiec-Stronie Group and the Devono-Carboniferous polyphase metamorphic evolution of the Orlica-Śnieżnik Dome (NE Bohemian Massif)

Jastrzębski M., Budzyń B., Stawikowski W.

Geologia Sudetica

2014

Vol. 42

33--34

Stratigraphic and biogeographic significance of Late Cambrian trilobites from Łysogóry (Holy Cross Mountains, central Poland)

Żylińska A.

Acta Geologica Polonica

2002

Vol. 52, nr 2

217-238

Revision of the Late Cambrian trilobites from Łysogóry in the Holy Cross Mountains, central Poland, enabled the application of a modified version of the Upper Cambrian biostratigraphic zonation established for the Baltica palaeocontinent. The following zones and subzones were recognised: Olenus scanicus and Parabolina brevispina subzones, Leptoplastus - Protopeltura praecursor Zone, Peltura minor Zone (Ctenopyge affinis subzones), Peltura scarabaeoides Zone (Ctenopyge linnarssoni and? Parabolina lobata subzones) and the Acerocare Zone sensu lato. Biogeographically the trilobites of Łysogóry show a distinct change, from a low diversity fauna with a predominance of Avalonian forms in the early Late Cambrian, to more diversified assemblages, characterised by the constant increase to dominance of Baltic elements by the end of the Cambrian.

Late Cambrian trilobites from the Holy Cross Mountains, central Poland

Żylińska A.

Acta Geologica Polonica

2001

Vol. 51, nr 4

333-383

Thirty-seven trilobite taxa from the Upper Cambrian of the Holy Cross Mountains are described; eighteen are noted for the first time in Poland. Eleven of the previously recognised species are considered to be junior synonyms. Restorations of the exoskeleton for Aphelaspis rara (ORŁOWSKI), Leptoplastides irae (ORŁOWSKI), Peltura protopeltorum ORŁOWSKI and Trilobagnostus rudis (Salter) are provided. Large morphological variation in cephala of Parabolina (Neoparabolina) frequens (BARRANDE), observed in the literature and exemplified by the analysed material indicates that the hitherto recognised subspecies, P.(N.) frequens argentina (KAYSER) and P. (N.) frequens finmarchia (NIKOLAISEN & HENNINGSMOEN), represent one taxon. Parabolina (Neoparabolina?) lapponica WESTERGARD is most probably related to Parabolina (Neoparabolina) frequens (BARRANDE). Beltella LAKE is considered a junior synonym of Leptoplastides RAW, and the genus belongs to the Pelturinae rather than the Oleninae