The representation of various skeletal elements of the placoderms Bothriolepis ornata and B.
Also, all the three oryctocoenoses under discussion have similar taxonomic composition which includes placoderms Bothriolepis ornata Eichwald, B.
nobilissimus dominate the assemblage, forming about one third of all identified remains (Tables 2, 3), while placoderms Bothriolepis jani, B.
Bothriolepis ornata dominates the 1st and the 3rd oryctocoenosis (35.
plates of the pectoral fin of Bothriolepis, complete distal segment of the pectoral fin, fragments of cleithra of Holoptychius, etc.
Bothriolepis ornata Eichwald i ee stratigraficheskoe znachenie [Bothriolepis ornata Eichwald and its biostratigraphical significance].