Klapperilepis delicatula (Branson & Mehl, 1934) from the K. triangularis Zone at Płucki in the Holy Cross Mountains.

Apparatus composition of Klapperilepis delicatula.

Diagnoza

P₁ element with triangular outline of the platform extending into an extremely wide posterior lobe.

Porównanie

This is the first, and probably only up to the present Famennian conodont with the apparatus confirmed by a natural assemblage. Its preservation is not good enough to offer details on morphology of individual elements but the relatively wide angle between processes of the M element resembles early species of Klapperilepis. In sample Pł-1 relatively numerous P₁ elements are associated with those of Palmatolepis sandbergi and Tripodellus clarki and M elements of K. quadrantinodosolobata type. This leaves little choice and most probably K. delicatula belongs to an advanced lineage of Klapperilepis. Perhaps the Russian apparatus represents an early stage in its evolution with characters of the ancestral K. ultima still preserved.

Autekologia

Występowanie geograficzne

Płucki, Wietrznia, Miedzianka, Jabłonna, and Kowala.

Zasięg czasowy

K. triangularis Zone. 

Materiały muzealne

ZPAL: 208 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.