Early Permian fusulines from the western part of Mt. Ryozen, Shiga Prefecture, Japan

Abstract

We discriminated forty-seven species of Early Permian foraminifers, 29 fusulines and 18 non-fusuline foraminifers, in 14 limestone samples collected at seven localities in the western part of Mt. Ryozen, Shiga Prefecture, Japan. Among them 20 species of fusulines are described and their systematic problems are discussed. They include Pseudoschwagerina ryozenensis n. sp. and Paraschwagerina? sublineata. The former has a large and inflated fusiform test characterized by its irregularly fluted septa that produce a few chamberlets. Tha latter is important to consider taxonomy and phylogeny of schwagerinid species with infl ated test.