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1.
Graptolite faunas from theHolmograptus lentus,Pterograptus elegans, Hustedograptus teretiusculus andNemagraptus gracilis Zones are identified in the Ordovician succession of Rügen. The well sections bear incomplete, often fault-bounded successions. Tectonic stacking is present in the Rügen 3h core. A sedimentological gap is expected in the Arenig. About twenty graptolite species are described and their local biostratigraphic ranges are documented. Most of the faunal elements are described for the first time from the Ordovician of northern Germany. The faunal associations belong to the Atlantic Faunal Province.  相似文献   

2.
In the Upper Devonian Sander Schichten (Adorfian δ) of Bergisch Gladbach well preserved remains of graptolites have been found. These are the first grapto-lites ever detected in post-ordovician beds of the Bergisches Land. They belong to the AcanthograptidaeBulman and in this account are referred to? Palaeodictyota montana n. sp. Thus we can add to the DendrograptidaeRoemer, known for a long time from postsilurian beds, an Upper Devonian genus of different family affinities.  相似文献   

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