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.
Lake Farm Country Park Lake Farm Country Park Lake Farm Country Park is an expanse of green belt land approximately 60 acres in size fringed by trees and the Grand Union Canal, situated in the south of Hayes in the London Borough of Hillingdon. Its formal status as a country park dates back to September 2002. In 2014 an area of the park was developed as an academy school by Hillingdon Council. The development was controversial, since the site was classed as green-belt land, and several protests were held against the plans. Despite opposition, the application was approved in 2013, and construction continued throughout