Fig. 49 in Emergence and collapse of the Frasnian conodont and ammonoid communities in the Holy Cross Mountains, Poland

Fig. 49. Succession of palmatolepidid species in sections of the Frasnian and earliest Famennian representing probably relatively deeper (Płucki, Włochy) and shallower (Wietrznia) areas in the Holy Cross Mountains. Approximate percent contribution to samples shown by horizontal bars; provisional Ancyrodella−based zonation used to correlate sections (each lower zonal boundary defined on the evolutionary origin of its nominal species – they remain to be documented biometrically). Note that Klapperilepis triangularis and Conditolepis? linguiformis first appear in offshore areas and then expand to shallower environments. Also Lagovilepis bogartensis may be an open−sea species. Only K. praetriangularis survives the Frasnian–Famennian boundary event, probably being a relatively cold−water species. The record is too incomplete and punctuated to allow precise evolutionary studies but a general pattern of the evolution is shown with diagrammatic presentation of apparatuses.