Morphology of the pores-and-canals system in the albid tissue of some Late Devonian conodont elements

Distribution and morphology of pores and “canals” in the albid tissue of conodont elements of orders Ozarkodinida Dzik 1976 ( Mehlina Youngquist, Youngquistognathus Myshkina et Zhuravlev, Polygnathus Hinde, Bispathodus Müller), Prioniodontida Dzik 1976 ( Jablonnodus Dzik), and Priniodinida Sweet 1988 ( Ligonodina Bassler) are studied by light microscopy, SEM, and X-ray micro-CT. Taxonomical differences (at the generic level) of morphology of the pore-and-canal system of conodont elements promise systematical application of these features. Similarity in the composition of the pore-and-canal system in elements of the apparatus of Youngquistognathus suggests a chance to use the composition in reconstructing apparatuses on the basis of disjuncted conodont elements.