Where: Japan (35.4° N, 136.9° E: paleocoordinates 47.6° N, 145.0° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Haeckelicyrtium breviora zone, Rhaetian (205.6 - 201.6 Ma)

• upper Rhaetian

• group of beds-level stratigraphic resolution

Environment/lithology: basinal (siliceous); lithified chert and lithified shale

Size class: microfossils

Preservation: original silica

Collection methods: chemical, hydroflouric,

Primary reference: E. S. Carter and R. S. Hori. 2005. Global correlation of the radiolarian faunal change across the Triassic-Jurassic boundary. Canadian Journal of Earth Sciences 42(5):777-790 [W. Kiessling/M. Riess] more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 54216: authorized by Wolfgang Kiessling, entered by Martin Riess on 27.09.2005