Advances in the Ordovician graptolite biostratigraphy of the St Petersburg area, Russia
The Ordovician shallow-water shelf deposits rich in benthic fauna are exposed along the Russian part of the Baltic–Ladoga Klint. Graptolites occur only at some stratigraphic levels, being comparatively numerous in marls and clays and very rare in carbonate layers. Since the 19th century graptolites...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Estonian Academy Publishers
2009-03-01
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| Series: | Estonian Journal of Earth Sciences |
| Subjects: | |
| Online Access: | http://eap.ee/public/Estonian_Journal_of_Earth_Sciences/2009/issue_1/earth-2009-1-3-9.pdf |