Diagnoza

All elements of the apparatus laterally flattened very large denticle on the inner side of the cusp.

Porównanie

Although all elements of the apparatus are of similar appearance, up to six discrete element types can be distinguished in large samples. They differ in the orientation of the denticles, which are more or less laterally bent, and in the width of their bases. There seems to be only a single symmetry transition series composed of them, with the symmetrical element being the second in width the base. The elements with the widest base seem to be homologous to the P series while the twisted element at the opposite end of the morphocline is the M element.

Autekologia

Występowanie geograficzne

Zasięg czasowy

from the Volkhovian to Ashgill without showing any significant evolutionary changes. It thus belongs to one of the evolutionarily most conservative conodont lineages.

Materiały muzealne

Literatura