Summer Coast to the villages of Krasnaya Gora, Pertominsk, Unsky, Yarenga, and Lopshenga, and the connections are either by sea (irregular), or by air from Arkhangelsk. Summer Coast The Summer Coast ("Letniy Bereg", ) is a coastal area in Arkhangelsk Oblast in northwest Russia. It is located on the western side of the Dvina Bay in the White Sea, on the Onega Peninsula, between the Northern Dvina River delta and Cape Ukhtnavolok, opposite to the Winter Coast. The names reflect the fact that the pomors of the Dvina Bay were fishing at Summer Coast and Winter Coast in the summer and in
Onega stepanovi by an undivided zone. The surface of the undivided region of "Onega" is covered with small tubercles. "Onega" was originally described by Mikhail Fedonkin as a problematic organism, being grouped together with "Vendia", "Praecambridium" and "Vendomia" as possible stem-group arthropods due to a vague similarity with primitive Cambrian trilobites and arthropods. In 1985 Mikhail Fedonkin erected Phylum Proarticulata, in which he placed: "Onega", "Dickinsonia", "Palaeoplatoda", "Vendia", "Vendomia", "Praecambridium" and "Pseudovendia sp.", although he did not exclude the possibility that "Onega" may still be related to various lower Cambrian arthropods, such as "Skania". Andrey Yu. Ivantsov has proposed that "Onega" be