Klapperilepis schuelkei Dzik, 2006. from the K. triangularis Zone strata at Płucki in the Holy Cross Mountains.

Apparatus composition of Klapperilepis schuelkei.

Diagnoza

Smooth platform of P₁ elements with pointed lobe, M element with fan-like arrangement of denticles, P₂ elements with weakly developed platform and regular denticulation.

Porównanie

The apparatus of this species was restored by Schülke (1999) as Palmatolepis arcuata, but  the type horizon of the holotype of Palmatolepis arcuata of Schülke (1995) is of significantly younger age and cannot serve as the name-bearer for it. Instead, I suggested Palmatolepis marginata clarki Ziegler, 1962 as possibly conspecific with this early member of the Klapperilepis lineage, although the latter species has been synonimized with Tripodellus variabilis by Schülke (1999). Without additional topotype material large enough to enable apparatus reconstruction it is hard to decide on such subjects and the only basis for this decision was that the type specimen of K. clarki shows a more rounded appearance of the lobe and its more transverse direction that is typical for T. variabilis. Admittedly, the three specimens from the type horizon  show a robust platform margin typical of early Tripodellus. Moreover, the co-occurrence of the type material with the rather advanced member of the Klapperilepis lineage, K. quadrantinodosolobata, supports the Schülke’s (1999) idea that P. clarki is a member of another lineage, thus belonging rather to Tripodellus. To clarify these nomenclatorial uncertainties, I propose a new name for this species, based on the material from the earliest Famennian and accept Schülke’s (1999) interpretation of T. clarki.

Autekologia

Występowanie geograficzne

Płucki.

Zasięg czasowy

Earliest K. triangularis Zone.  

Materiały muzealne

ZPAL: 25 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.