Figure F4. Operculina complanata (Op), oyster (Biv) and bryozoan (Bry) fragments, and other bioclastic debris in terrigenous muds from latest Oligocene–earliest Miocene (~22.5 Ma) facies of the Northern Marion Platform (Sample 194-1193C-6R-CC, 0 cm; scale bar = ~1 mm).

Figure F4. Operculina complanata (Op), oyster (Biv) and bryozoan (Bry) fragments, and other bioclastic debris in terrigenous muds from latest Oligocene–earliest Miocene (~22.5 Ma) facies of the Northern Marion Platform (Sample 194-1193C-6R-CC, 0 cm; scale bar = ~1 mm).