Description of Plate VI. 



Psamtnosteus covnplicatus KI.KU new species. Upper Devonian (K), Skrap Valley, 



Ellesmere Land. Page 26. 

 Fig. 1. Transversal microscop. section of upper part of u body plate (PI V, fig. 1). 



C 40. S. I. 13. Pal. Mus. Krist. Univ. 

 Fig. 2 Longitudinal microscop. section of same piece. X 40. S. I. 13. Pal. Mns. 



Krist. Univ. 

 Fig. 3. Microscop. section of a denticle. X 80. S. I. 13. Pal. Mus. Krist. Univ. 



Psammosteus mceandrinus Ac,., Upper Devonian, River Andoma, Kurland. 



Page 36. 



Fig. 4. Microscop. section of a denticle. X 80. Pal. Mus. Krist. Univ. 



Fig. "). Transversal microscop. section of upper part of a body plate. X 40. Pal. 



Mus. Krist. Univ. 

 Fig. ('). Longitudinal microscop. section of same piece. X 40. Pal. Mus. Krist. Univ. 



