Fig. 43. Variability of P1 (sp) elements of the latest Frasnian palmatolepidids. Scattergrams show ontogenetic changes of the angle between the dorsal process and the posterior lobe of the platform in sample Pł−391 from the Upper Kellwasserkalk at Płucki (Fig. 42) overdominated by Lagovilepis bogartensis (with rare Manticolepis winchelli documented with its M elements), associated Klapperilepis triangularis and sample Wtr−18 from Wietrznia where only M elements of Manticolepis (probably a relic population of M. gigas) have been found (Fig. 38A–H). The Pł−391 population variability is separately shown for adult elements (longer than 1 mm) with contours of extreme and modal morphologies added. Note that there is no apparent difference in the course of ontogeny and morphologic variability of platform shape between L. bogartensis and M. winchelli or M. gigas (despite fundamental differences in the apparatus organisation) whereas K. triangularis is different in all these respects (plus the dorsal process bending).

Published as part of Dzik, Jerzy, 2002, Emergence and collapse of the Frasnian conodont and ammonoid communities in the Holy Cross Mountains, Poland, pp. 565-650 in Acta Palaeontologica Polonica 47 (4) on page 614, DOI: 10.5281/zenodo.13286059