Where: N of Lake Balkash, Kazakhstan (47.5° N, 76.0° E: paleocoordinates 4.8° S, 68.3° E)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Suite 5 Member (Tokrau Fm Formation), Pridoli (423.0 - 419.2 Ma)
• This is in the perneri-Kasachstanensis zone of the Tokrau Fm
• bed-level stratigraphic resolution
Environment/lithology: marine; gray, green siltstone
Preservation: adpression
Collection methods: This bed (Bed 23) also contains graptolites.
Primary reference: I. F. Nikitin and S. M. Bandaletov. 1986. Tokrauskii Gorizont Verkhego Silura [The Tokrau horizon of the Upper Silurian] 1-233 [A. Raymond/A. Raymond/P. Wagner]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 53609: authorized by Anne Raymond, entered by Anne Raymond on 12.09.2005
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Zosterophyllopsida | |
"Cooksonella sp." = Eocooksonia
|