Where: Russian Federation (62.0° N, 170.0° E: paleocoordinates 74.1° N, 108.1° W)

• coordinate estimated from map

• hand sample-level geographic resolution

When: Late/Upper Callovian to Late/Upper Callovian (164.7 - 155.7 Ma)

• bed-level stratigraphic resolution

Environment/lithology: basinal (siliceous); lithified chert

Size class: microfossils

Collection methods: bulk, chemical,

Primary reference: V. S. Vishnevskaya and B. L. Murchey. 2002. Climatic affinity and possible correlation of some Jurassic to Lower Cretaceous radiolarian assemblages from Russia and North America. Micropaleontology 48(S1):89-111 [W. Kiessling/W. Kiessling/W. Kiessling] more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 51293: authorized by Wolfgang Kiessling, entered by Wolfgang Kiessling on 02.06.2005