Baltica data makes it difficult to locate the margin in the Arctic. Ordovician faunas indicate that most of Svalbard, including Bjørnøya, was part of Laurentia, but Franz Josef Land and Kvitøya (an eastern island of the Svalbard archipelago) most likely became part of Baltica in the Timanide Orogeny. The Taymyr Peninsula, in contrast, never was part of Baltica: southern Taymyr was part of Siberia whilst northern Taymyr and the Severnaya Zemlya archipelago were part of the independent Kara Terrane in the early Palaeozoic. The eastern margin, the Uralide orogen, extends from the Arctic Novaya Zemlya archipelago to the Aral Sea. The
Administrative divisions of Arkhangelsk Oblast Administrative divisions of Arkhangelsk Oblast Within the framework of administrative divisions, Arkhangelsk Oblast is divided into six cities and towns of oblast significance, twenty-one districts, and two island territories (Franz Joseph Land and Victoria Island). Besides, Mirny is a town under the federal government management. In terms of the area, the biggest administrative districts are Novaya Zemlya () and Mezensky District (). The smallest one is Solovetsky District. In terms of the population, the biggest administrative district is Velsky District (61,819 in 2002), the smallest ones are Solovetsky District (968), Novaya Zemlya (2716), and Leshukonsky District (10,708). Most of the