Where: Japan (36.4° N, 139.6° E: paleocoordinates 36.3° N, 116.3° E)

• coordinate based on nearby landmark

• hand sample-level geographic resolution

When: Paraentactinia nakatsugawaensis other zone, Spathian (251.3 - 247.2 Ma)

• bed-level stratigraphic resolution

Environment/lithology: basinal (siliceous); lithified radiolarite

Size class: microfossils

Collection methods: chemical, hydroflouric,

Primary reference: J. Isogawa, Y. Aita, and T. Sakai. 1998. Early Triassic radiolarians from the bedded chert in the Minowa quarry, Kuzuu Town, Tochigi Prefecture. News of Osaka Micropaleontologists, Special Volume 11:81-93 [W. Kiessling/W. Kiessling] more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 95330: authorized by Wolfgang Kiessling, entered by Wolfgang Kiessling on 12.04.2010