Conditolepis distorta (Branson & Mehl, 1934) from the C. marginifera Zone at Łagów in the Holy Cross Mountains - P₁ elements.

Conditolepis distorta (Branson & Mehl, 1934) from the C. marginifera Zone at Łagów in the Holy Cross Mountains - P₁, P₂ and M  elements.

Diagnoza

P₁ elements elongate and sinusoidal, with narrow platform bearing a prominent anterior ridge, close to the blade along its whole length.

Porównanie

Transition from C. glabra to C. distorta took place early in the C. marginifera Zone. As already shown in the Canning Basin succession in Australia by Glenister and Klapper (1966), the change is gradual. Populations intermediate in age show more and more common elements having the narrow furrow between the ridge on the anterior lobe and the blade, including those usually classified as C. pectinata.

Autekologia

Występowanie geograficzne

Łagów, Kowala, and Miedzianka; Ostrówka.

Zasięg czasowy

Typical populations are common in the C. marginifera Zone; rare specimens from higher horizons. 

Materiały muzealne

ZPAL: 890 specimens.

Literatura

Dzik, J. 2006. The Famennian "Golden Age" of conodonts and ammonoids in the Polish part of the Variscan sea. Palaeontologia Polonica 63, 1-359.