RUSSIAN JOURNAL OF EARTH SCIENCES VOL. 7, ES6003, doi:10.2205/2005ES000183, 2005

Plate 2. Figs. 1-6. Dictyotidium minor Stan. of different preservation.
1-4 - Macerate 386; 3 - the form with outgrowths of cell envelope (SEM);
5 - Preparation 514-1/7, accretion (?) of two forms (coenobiums);
6 - holotype, different optical sections, 6a - upper focus,
6b - middle focus, Preparation 386-1/7.
Figs. 7, 12. Dictyotidium (?) sp. Forming coenobiums?; 7 - Macerate 386 (SEM);
12 - Preparation 386-1/7a.
Figs. 8, 16, 17, 22. Centrum sp. 8, 17 - Macerate 386 (SEM);
16 - Preparation 512-2/1; 22 - Preparation 512-2/8a.
Figs. 9, 10. Tchuja zonalis Stan. 9 - holotype, Preparation 388-2/11;
10 - Preparation 512-2/10.
Fig. 11. Tchuja granosa Stan. Holotype, Preparation 388-2/2.
Figs. 13, 18, 19, 23-27, 30. Centrum sp. (ad lib. Tchuja sp.).
Divisible (?) forms or their depositions surrounded by mucilage.
13 - Macerate 386 (SEM); 18 - Preparation 513-a/5k;
19 - Preparation 513-a/5j; 23 - Preparation 514-1/7a;
24 - Preparation 512-2/9c; 25 - Preparation 513-a/5o;
26 - Preparation 513-a/5h; 27 - Preparation 512-2/11;
30 - Preparation 513-a/5b.
Figs. 14, 15. Centrum quadratum Stan. 14 - Preparation 512-2/8;
15 - holotype, Preparation 389-1/14.
Fig. 20. Centrum ovalis Stan. Preparation 514-1/10.
Fig. 21. Centrum sp. (ad lib. Tchuja sp.). Preparation 513-a/8.
Fig. 28. Fragment of plant issue. Preparation 386-1/7.
Fig. 29. Trichome fragment of Oscillatoriales. Preparation 513-a/5a.
The material is deposited in the Institute of the Earth's Crust,
Siberian Division, Russian Academy of Sciences, in Irkutsk.
Locality: East Siberia, Patomskoe zone, left bank of the Bol'shaya Chuya River,
above the Stupino River, Late Riphean, Chencha Formation.
Sources of illustrations: biological preparations, scanning electron microscope (SEM).
Scale bars: thickened - 1
m m, thin - 10
m m.

Citation: Stanevich, A. M., V. K. Nemerov, Yu. K. Sovetov, E. N. Chatta, A. M. Mazukabzov, V. I. Perelyaev, and T. A. Kornilova (2005), Precambrian microfossil-characterized biotopes from the southern margin of the Siberian craton, Russ. J. Earth Sci., 7, ES6003, doi:10.2205/2005ES000183.
Copyright 2005 by the Russian Journal of Earth Sciences
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