The bacteriomorph structures in Mesozoic lake deposits

摘要

Mesozoic lake deposits of 12 localities mainly from carbon-rich facies were studied by SEM for fossilized remains of bacteria and cyanobacteria. Few Devonian, Carboniferous and Permian localities were studied too. Lithified voluminous bacteriomorph objects were found in most localities. Some of them were lithified very fast and incorporated in sediment thus can not be recent pollution. Filamentous remnants are rare, spheroids about 3 urn are most common.