Revision of annulated orthoceridan cephalopods of the Baltoscandic Ordovician
The annulated orthoceridans of the Middle and Late Ordovician of Baltoscandia are described and their systematic frame is revised. The revision of these nautiloids, which are part of the Orthocerida and Pseudorthocerida, is based on the investigation of characters of the septal neck, the siphuncular...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Pensoft Publishers
2006-02-01
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| Series: | Fossil Record |
| Online Access: | http://www.foss-rec.net/9/137/2006/fr-9-137-2006.pdf |