Tripodellus gonioclymeniae (Müller, 1956) from the P. jugosus Zone at Ostrówka and Kowala in the Holy Cross Mountains and the P. jugosus and the D. trigonica  Zones at Dzikowiec in the Sudetes - P₁ elements.

Diagnoza

Strongly bent P₁ element with platform narrowing to the tip, with its greatest width in the middle length of the element, the asymmetric basal cone continues throughout ontogeny, other elements of the apparatus probably indistinguishable from T. gracilis.

Porównanie

No doubt that the lineage T. mancus → T. gonioclymeniae originated from T. gracilis. Sandberg and Ziegler (1979) proposed ‘Palmatolepis expansa’ to be the connecting link. As noted above, this morphology is not represented in the Holy Cross Mountains and probably the evolution took place elsewhere, with T. manca and T. gonioclymeniae being successive immigrants from that source area.

Autekologia

Występowanie geograficzne

Ostrówka, Kowala, and Dzikowiec.

Zasięg czasowy

Late P. jugosus to D. trigonica Zones. 

Materiały muzealne

ZPAL: 243 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.