Diagnoza

Elongate P₁ element with gently convex smooth anterior lobe.

Porównanie

The problem of the evolutionary origin of this species remains to be solved. As shown  there is a tremendous polymorphism in the populations transitional between those with dominant C. quadrantinodosa and C. marginifera morphologies, which obliterates the true nature of evolutionary change. Whether the genetic barrier developed sympatrically in the whole area of occurrence of the species or, alternatively, an allopatric speciation event not expressed in morphology preceded spatial reunification of the lineage, remains unknown. Perhaps detailed biometrical studies in successions from different places in the world may help in finding an answer to this question.

Autekologia

Występowanie geograficzne

Łagów, Kowala, and Miedzianka.

Zasięg czasowy

C. marginifera Zone.

Materiały muzealne

ZPAL: 145 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.