1990
The brachiopod Heterorthis from the Caradoc of the Oslo Region - a Gondwanan immigrant?
70
3
pp. 187-189

The Ordovician enteletacean brachiopod Heterorthis is documented from the Baltic province for the first time. The occurrence, within the lower Caradoc Arnestad Formation, is earlier than its appearance in the North American province, but later than the acme of the heterorthids around the margins of Gondwana.

029-196X
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