Conditolepis tenuipunctata (Sannemann, 1955) from the K. crepida Zone at Jabłonna in the Holy Cross Mountains.

Apparatus composition of Conditolepis tenuipunctata.

Diagnoza

P₁ elements elongate and sinuous, with wide smooth platform bearing rounded triangular extension in the middle.

Porównanie

The species may be related to stratigraphically older C. lobicornis, from which it differs in the reduced lobe of the platform. At Wietrznia an early population of this species occurs with P₂ elements virtually lacking the platform, similar to those of C. falcata, that is without a recognizable cusp. Younger samples with P₁ elements typical for the species contain P₂ elements with very wide, oval platform, closely similar to that in more advanced Conditolepis species. A robust appearance of P₁ elements characterizes populations with the platform of P₂ elements already well developed but not reaching the tip of the inner process.

Autekologia

Występowanie geograficzne

Jabłonna, Wietrznia, Kowala, and Miedzianka in the Holy Cross Mts.; borehole near Siewierz, Upper Silesia 

Zasięg czasowy

K. crepida Zone.   

Materiały muzealne

ZPAL: 3,535 specimens.

Literatura

Dzik, J. 2002. Emergence and collapse of the Frasnian conodont and ammonoid communities in the Holy Cross Mountains, Poland. Acta Palaeontologica Polonica 47, 565-650.

Szulczewski, M. 1971.  Upper Devonian conodonts, stratigraphy and facies development in the Holy Cross Mts. Acta Geologica Polonica 21, 1-129.

Wolska, Z. 1967. Górno-dewońskie konodonty z południowo-zachodniego regionu Gór Świętokrzyskich. Acta Palaeontologica Polonica 12, 363-435.

Nehring, M. 1967. Konodonty dolnego famenu z profilu Winowno w okolicach Siewierza (Wyżyna Śląsko−Krakowska). Biuletyn Instytutu Geologicznego 209, 113–169.

Sannemann, D. 1955. Beitrag zur Untergliederung des Oberdevons nach Conodonten. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen 100, 324-331.