Epidiceras (Bivalvia, Hippuritoidea) from the Tithonian–Berriasian Torinosu-type Limestones of the Sakawa Area, Southwest Japan
Journal: TURKISH JOURNAL OF EARTH SCIENCES
Year: 2010

Excavated specimens of two primitive rudists, Epidiceras speciosum (Goldfuss) and Epidiceras guirandi (de Loriol), are systematically described for the first time from the Tithonian-Berriasian Torinosu-type limestones of the Torinosu Group in the Sakawa area, Central Shikoku, Southwest Japan. E. guirandi was previously known only from the Late Kimmeridgian Mediterranean Tethys, so this occurrence in Southwest Japan significantly extends the recorded biogeographical and stratigraphical distributi