Diagnoza

The P₁ elements with a transversely ribbed platform and a tendency to develop several ridges parallel to the carina. They run at a large angle to the element axis, ending approximately at the cusp level, either at the platform margin or in the middle of the platform lobe. 

Porównanie

In some specimens the posterior ridge continues further and approaches gently the platform margin. The tuberculation of the anterior lobe may be irregular or tubercles tend to be arranged in transverse rows.

Autekologia

Występowanie geograficzne

Zasięg czasowy

Tournaisian

Materiały muzealne

ZPAL

Literatura

Dzik, J. 1997. Emergence and succession of Carboniferous conodont and ammonoid communities in the Polish part of the Variscan sea. Acta Palaeontologica Polonica 42, 57-170.