Ordovician and Silurian stratigraphy and trilobites, Taurus Mountains nearKemer, southwestern Turkey

Lower Palaeozoic outcrops near Kemer comprise only Ordovician and Silurian strata in the Upper Antalya Nappes, and are described in detail for the fir st time. The oldest rocks, Seydisehir Formation (lower Arenig), resemble th ose of the central Taurides. A disconformity is probable, though unexposed, below the succeeding Sort Tepe Formation (Ashgill), a unit seen elsewhere only in south central and southeastern Turkey; sparse trilobites include Cy clopyge, Cyphoniscus;, Panderia, Symphysops, Ulugtella, and one new species Placoparia (Hawleia) marcouxi. Silurian rocks (Sapandere Formation) differ from those further east in the Taurides, and are of Llandovery (Telychian) , Wenlock and ?Ludlow age, based on conodonts, graptolites and trilobites ( Cerauroides, Otarion (Aulacopleura), Sphaerexochus) the affinities of which lie with the Carnic Alps and western Europe. The Sapandere Formation is un conformably overlain by red sandstones at the base of the Armutlugozlek For mation (Devonian).