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 Forest Country Day School Lake Forest Country Day School Lake Forest Country Day School (LFCDS), founded in 1888, is a coeducational, independent preK-8 school located on a 29-acre campus in Lake Forest, Illinois, USA, a suburb approximately 30 miles north of Chicago. The School serves families from more than 34 communities. The School is affiliated with the Country Day School movement and is a member of The National Association of Independent Schools, The Independent Schools Association of the Central States, The Lake Michigan Association of Independent Schools and The Secondary School Admission Testing Board. The school has just recently added a new House System.