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 1955//a//) that would suggest that they occur in different horizons. Moreover, Sanemmann (1955//a//) 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. |