Diagnoza

Narrow P₁ elements with short anterior lobe having elevated rounded margin and no posterior lobe.

Porównanie

The species is transitional between C. tenuipunctata and C. glabra but usually is understood in a typological sense.  However, C. tenuipunctata and P. unca share the same type locality and there is nothing in the text of their original description (Sannemann 1955a) that would suggest that they occur in different horizons. Moreover, Sanemmann (1955a) illustrated typical C. glabra from the same locality. . In material from Holy Cross Mountains C. tenuipunctata and C. glabra, as well as populations possibly transitional between them, do not differ in their apparatus composition. This refers also to the M elements and the specimen illustrated by Schülke (1999, pl. 3: 18) as belonging to C. tenuipunctata may be atypical. Narrow-platform elements classified by Schülke (1999) in P. unca co-occur with typical elements of C. tenuipunctata in its late samples and the same is in the Montagne Noire material of Schülke (1999, p. 91). This suggests that these are just morphologies within monospecific populations instead of distinct species and that in the course of evolution narrow-platform elements became more and more numerous.

Autekologia

Występowanie geograficzne

Kadzielnia, Jabłonna, Wietrznia, Łagów, Kowala, and Miedzianka.

Zasięg czasowy

K. crepida Zone. 

Materiały muzealne

ZPAL: 7,165 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.