Trepostome bryozoan Dianulites borealis Astrova, 1965, the earliest known member of this genus, has been identified from the Early Ordovician of Severnaya Zemlya, Arctic Russia. This species developed hemispherical colonies which indicate that it lived on a relatively soft substrate with moderately low rates of sedimentation and erosion. The new record from Severnaya Zemlya expands the palaeogeographical distribution of Dianulites, known before from the Early Ordovician of Novaya Zemlya, Arctic Russia.
ISI Document Delivery No.: AB2DH Times Cited: 0 Cited Reference Count: 69 Ernst, Andrej Bogolepova, Olga K. Hubmann, Bernhard Golubkova, Elena Yu. Gubanov, Alexander P. Swedish Polar Research Secretariat; CASP Severnaya Zemlya Project Fieldwork on October Revolution Island was funded by the Swedish Polar Research Secretariat. The consortium of oil and gas industry subscribers is thanked for its financial support of the CASP Severnaya Zemlya Project. We also thank two anonymous reviewers for their helpful and constructive comments. 0 Cambridge univ press New york Geosciences, Multidisciplinary