Onega stepanovi placed in phylum Proarticulata, as the segments in recently discovered, exceptionally well-preserved fossils display the glide, or "staggered", symmetry characteristic of the majority of proarticulatans. Imprints of "Onega stepanovi" have been found in the Verkhovka and Zimnie Gory Formations of the Ediacaran (Vendian) rocks of the Arkhangelsk Region, Russia. All the fossil specimens are negative imprints on the bases of fine-grained sandstone beds with the "elephant skin" and tubercle texture diagnostic of microbial mats. The same bedding planes contain various other Ediacaran species: "Cyclomedusa", "Ediacaria", palaeopascichnids, "Eoporpita", "Yorgia", "Andiva", "Archaeaspinus", "Vendia", "Dickinsonia", "Anfesta", "Albumares", "Tribrachidium", "Kimberella", "Parvancorina", "Charniodiscus" and others.
Onega Peninsula one of the Kazakov's books of short stories is "Poedemte v Lopshengu" — Let us go to Lopshenga. The economy of the peninsula is based on the timber production and fishery. The village of Luda is connected by an all-season road to Severodvinsk and Onega. There is a boat ferry across the Una Bay. Other villages at the coast have infrequent air and sea connections to Onega and Arkhangelsk. A national park, Onezhskoye Pomorye National Park, was opened on the coast of the Onega Peninsula in 2013 to protect pristine forests. Onega Peninsula The Onega Peninsula is located in Arkhangelsk