Bryozoan fauna from the Mississippian of the Akuyuk section, southern Kazakhstan

摘要

Five bryozoan species are described from the lower part of the Akuyuk section (Late Visean, Mississippian) in southern Kazakhstan. Thin sectioning and micro-computed tomography have been utilized to study this material in detail. These integrated and complex techniques have a high potential to reveal much detail, although recrystallization and weathering of colonies preclude in depth assessment of all microstructures in detail. The bryozoan assemblage is represented by reticulate (60 %), ramose (20%) and pinnate (20%) growth habits. The bryozoan fauna, together with accompanying fossils, and microfacies are characteristic for an environment with a stable substrate subjected to moderate wave energy conditions.