Diagnoza

P₂ elements of robust appearance, with incipient platform, P₁ elements with usually narrow but robust platform and with extensive asymmetric basal cone.

Porównanie

Dense denticulation of juvenile P₁ elements somewhat resembles peniculus and together with the shape of the platform in P₁ elements may suggest affinities with Polynodosus (especially P. lauriformis). No transitional forms have been found, however. The basal cone, which corresponds to an expanded sinuosa larva, points to Lagovignathus fallax as the alternative ancestor. The shape of the platform and outline of mature P₁ elements fits this possibility even better. Probable M element is also unlike that of Polynodosus.

The evolutionary change with respect to L. fallax was the probable further extension of the sinuosa larva stage and development of strong asymmetry of the basal cone in its P₁ element. As a result, a situation developed closely similar to that in advanced species of the palmatolepidid Tripodellus lineage.

Autekologia

Występowanie geograficzne

Kowala, Ostrówka, Jabłonna and Dzikowiec.

Zasięg czasowy

The L. styriacus to P. jugosus Zones. 

Materiały muzealne

ZPAL:513 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.