Lower Cretaceous Ammonites from the Miyako Group : Part 4. Pseudoleymeriella from the Miyako Group

This paper describes two new species of Pseudoleymeriella, a Lower Cretaceous ammonite genus, from the Miyako Group of Northeast Japan. It has become clear that Pseudoleymeriella was distributed not only in the Mediterranean region during the Upper Aptian age but also in the Pacific region during the Lower Albian