The dominant factor in faunal succession of conodonts in the Frasnian of Poland is the apparent immigration of species
 originating allopatrically in other regions.  Each immigration event usually changes the population variability of a local
 species (character displacement).  Only a few lineages show their phyletic evolution within the studied area.  Attempts to
 distinguish conodont species on the basis of platfom element shape failed in some of the latest Frasnian palmatolepidids.
 Even at die apparatus-based generic level, certain ramifom elements of the apparatus appear much more diagnostic than
 the platfoms.  Correlative value of the late Frasnian palmatolepidids of unknown apparatus structure is thus questionable.
 The evolution of platform elements in Ancyrodella offers a more solid basis for age determination although their great
 population variability makes resolution rather low and requires the population approach.  The panderodontids
 Belodella (?) tenuiserrata sp., B. minutidentata sp. nov., B. robustidentata sp. nov., prioniodontid Icriodus kielcensis sp.
 nov., enigmatic monospecific Playfordiidae fam. nov., prioniodinids Dyminodina planidentata gen. et sp. nov., D.
 anterodenticulata sp. nov., D. kovalensis sp. nov., Pluckidina kielcensis gen. et sp. nov., P. slupiensis sp. nov., P.
 robustipegmata sp. nov., and P. lagoviensis sp. nov., derived polygnathid Avignathus bifurcatus sp. nov., probably sec-
 ondarily simplified polygnathid Nicollidina gen. nov., and palmatolepidids Kielcelepis gen. nov., Lagovilepis gen. nov.
 md Klapperilepis gen. nov. are proposed.

 Key words: Conodonta, Ammonoidea, Devonian, evolution, Holy Cross Mountains, Poland.