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Previously published biostratigraphical subdivisions of the "middle" Cambrian succession of the Příbram-Jince Basin in the Barrandian area are summarized and a modified subdivision of twelve biozones proposed. Nine of the biozones are delimited by the first appearance of the eponymous species; five of these are interval zones and four are taxon-range zones. The youngest stratigraphical levels of the fossiliferous sequence in the Litavka River Valley, which lack any characteristic taxa, are assigned to one assemblage zone that is subdivided into two levels defined by the presence of two trilobites and two lingulate brachiopods. The Kodymirus vagans, Hypagnostus parvifrons and Dawsonia bohemica zones, and the Barren interzone between Paradoxides (Eccaparadoxides) pusillus-Paradoxides (Paradoxides) paradoxissimus gracilis, are newly established; the other zones are redefined or the earlier definitions retained.•

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All earlier published concepts and stratigraphical subdivisions of the Cambrian succession in the Skryje-Týřovice Basin are summarized. Forty-two different proposals for lithostratigraphic subdivision published since 1846 are discussed and plotted in seven figures. Here, modified subdivision for the Skryje-Týřovice Basin includes four lithostratigraphic units, the Mileč Member, the Slapnice Member and the Skryje Member, all representing different lithofacies within the newly established Buchava Formation. The whole sedimentary succession contains a rich record of skeletal fauna and is correlated with the Third unnamed Series of the Cambrian System, corresponding to the traditional middle Cambrian Series