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.
Daniel Onega all time Copa Libertadores topscorers list with 31 goals in 47 games. In 1972 Onega moved to Racing Club for a season, but he only managed 9 goals and returned to River the following season. In 1973, he moved to Spain to play for Córdoba CF in the Spanish 2nd division, he stayed with the club until 1978 when he moved to Millonarios in Colombia. It was with Millonarios that he won his first and only league title. At the end of the 1978 season Onega retired from football. Daniel Onega Daniel Onega (born March 17, 1945) is a retired