Abstract
Three species of early Kasimovian fusulines were obtained from erratic rock samples of brecciated
limestone contained in altered basic pyroclastic rocks along a small valley north of Kamiazahara,
Shingu-cho, Tatsuno City. They are thought to be derived from the Kozuki Formation of the Ultra-
Tamba Terrane. Obsoletes obsoletus, Protriticites cf. subschwagerinoides, and Quasifusulinoides sp. are described as the thirteenth of a series of descriptive works of Hyogo foraminifers.