Planipolygnathus granulosus (Branson & Mehl, 1934) from the P. trachytera Zone at Jabłonna in the Holy Cross Mountains - P₁ elements.

Diagnoza

Leaf-like, relatively wide platform of P₁ elements densely ornamented with relatively large tubercles.

Porównanie

The species is so similar to the significantly older L. lagowiensis that, despite the discontinuous fossil record at Łagów, the ancestor-descendant relationship seems almost certain. Specimens with smooth concave areas near the ventral end of the platform are transitional to L. styriacus, the successor of L. granulosus in the same lineage.

Autekologia

Występowanie geograficzne

Łagów, Miedzianka, Jabłonna, Kowala, and Wzdół.

Zasięg czasowy

P. trachytera Zone. 

Materiały muzealne

ZPAL: 39 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.