Where: Siberia, Russian Federation (49.4° N, 136.4° E: paleocoordinates 34.0° N, 64.6° E)

• coordinate based on political unit

• small collection-level geographic resolution

When: Climacograptus cyphus zone, Rhuddanian (443.4 - 440.8 Ma)

• Unnamed formation; shown as strat. equiv. of Chamba Fm.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, black, argillaceous siltstone and limestone

Collection methods: core,

Primary reference: O. K. Bogolepova and J. Kříž. 1995. Ancestral forms of Bohemian type Bivalvia from the lower Silurian of Siberia (Tungusskaja Syneclise, Russia). Géobios 28(6):691-699 [J. Alroy/M. Sommers/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 3343: authorized by John Alroy, entered by Mike Sommers on 30.07.1999

Creative Commons license: CC BY (attribution)