Bioturbated mudstones containing marine Phycosiphon brrows.　↓ Stratigraphic position: lower part of the late Middle-Upper Jurassic Ohchi Formation, Toyora Group in the Ohchi area. ...

Plant fossil derived from the late Middle - Upper Jurassic Ohchi Formation of the Toyora Group distributed in Shimonoseki City, Yamaguchi Prefecture, Southwest Japan. Article on the Ohchi Formation ...

Plant fossil derived from the late Middle - early Upper Jurassic Ohchi Formation of the Toyora Group distributed in Shimonoseki City, Yamaguchi Prefecture, Southwest Japan. Article on the Ohchi Forma ...