The facts regarding to the early stages of algae evolution in the Precambrian are very rare (more than 542 million years ago). In this paper, the author describes the first discovered evidence that the sexual reproduction process took place one billion years ago. As it is known, sexual reproduction led to the diversity of living organisms on the Earth, and in general, accelerated the evolution process.
Cite this paper
P. Kolosov, "Sexual Reproduction One Billion Years Ago," Natural Resources, Vol. 4 No. 5, 2013, pp. 383-386. doi: 10.4236/nr.2013.45047.
 E. S. Barghoorn and J. W. Schopf, “Microorganisms from the Late Precambrian of Central Australia,” Science, Vol. 150, No. 3694, 1965, pp. 337-339.
 P. N. Kolosov, “Morphology of Some Ancient Cyanophytes,” The XII International Botanical Congress, Leningrad, 3-10 July 1975, p. 52.
 Z. Zhang, “Precambrian Microfossils from the Sinian of South China,” Nature, Vol. 289, No. 5800, 1981, pp. 792-793. doi:10.1038/289792a0
 P. N. Kolosov, “Microorganisms Findings in Precambrian,” Yakutsk, 1985, in Russian.
 T. V. Yankaouskas, “Precambrian Microfossils of the USSR,” Nauka, Leningrad, 1989, pp. 34-147.
 T. N. Hermann, “Organic World One Billion Years Ago,” Nauka, Leningrad, 1990.
 A. H. Knoll, “The Early Evolution of Eukaryotes: A Geological Perspective,” Science, Vol. 256, No. 5057, 1992, pp. 622-627. doi:10.1126/science.1585174
 V. N. Sergeyev, A. H. Knoll, G. A. Zavarzin, “The First Three Billion Years of Life: From Procariots to Eucariots,” Priroda, Vol. 6, 1996, pp. 54-67.
 N. P. O. Green, G. W. Stout and D. J. Taylor, “Biological Science,” Cambridge University Press, Cambridge, 1984.
 V. G. Pyatiletov, “Microfossils of the Late Precambrian from the Uchur-Maya Region. The Late Precambrian and Early Paleozoic in Siberia. The Riphean and Vendian,” IGG SD AS USSR, Novosibirsk, 1988, pp. 47-104.
 M. A. Semikhatov and S. N. Serebryakov, “The Siberian hypostratotype of the Riphean,” Nauka, Moscow, 1983, in Russian.
 M. A. Semikhatov, G. V. Ovchinnikova, I. M. Gorokhov et. al., “Izotopic Age of the Middle and Upper Riphean Boundary: Pb-Pb Geochronology of Carbonate Rocks of Lakhandian Series, Eastern Siberia,” Reports RAN, Vol. 372, 2000, pp. 216-221.
 J. W. Schopf and J. Paleontol, “Microflora of the Bitter Springs Formation, Late Precambrian, Central Australia,” Journal of Paleontology, Vol. 42, No. 3, 1968, pp. 651-688.
 J. W. Schopf, “Earth’s Earliest Biosphere. Its Origin and Evolution,” Princeton University Press, Princeton, 1983.
 R. G. South and A. Whittick, “Introduction to Phycology,” Blackwell Scientific Publications, Oxford, London, 1987. (Basis of Algology, Translation from English, Mir, Moscow, 1990, pp. 9-197.)
 S. P. Vasser, N. V. Kondratieva, N. P. Masyk, et al., “Algae,” Reference Book, Naukova Dumka, Kiev, 1989.