The Peculiarity of the Relief of Primary Layer and Shell Microstructureof the Late Jurassic Discinisca (Lingulata, Family Discinidae)
Organophosphatic brachiopods Discinisca sp. from the Upper Jurassic sediments of the North-Western Siberia was described. Unusual for Mesozoic discinids primary layer with the concentric relief structures and details of shell microstructure was obtained on external and internal sides of braphic and adult stages of dorsal shell.