This paper describes a colonial rugose coral from the upper Emsian or lower Eifelian of Aviados (Provincia León, northern Spain). This colony, which has been figured as Phillipsastrea torreana (Milne-Edwards & Haime, 1851) by Almela & Revilla (1950), belongs in fact to Radiastraea arachne Stumm, 1937. It is the first reported occurrence of the genus Radiastraea from Europe, and an example of close palaeobiogeographical relationships between the Cantabrian Mountains and North America during the Emsian. Cantabriastraea Schröder&Soto, 2003 is probably only a marginal case of Radiastraea Stumm, 1937. The lectotype of Phillipsastrea torreana var. minuta Almela & Revilla, 1950 from the upper Emsian to lower Eifelian or upper Givetian of Aviados (Provincia León, northern Spain) is designated and described in detail. It is a subspecies of Phillipsastrea torreana (Milne-Edwards & Haime, 1851) with 10–12 major septa and a tabularium diameter of 1.9–2.1 mm. • Key words: Anthozoa, biogeography, Devonian, systematics, rugose corals, Spain.

MAY, A. 2006. Radiastraea (Anthozoa, Rugosa) from the Emsian and Eifelian (Devonian) of Aviados, northern Spain. Bulletin of Geosciences 81(3), 151–162 (2 figures). Czech Geological Survey, Prague. ISSN 1214-1119. Typescript received May 29, 2006; accepted in revised form June 28, 2006; issued September 30, 2006.

Andreas May, Saint Louis University – Madrid campus, Avenida del Valle 34, E-28003 Madrid, Spain; maya@madrid.slu.edu

The present article describes five different tabulate coral species of the families Micheliniidae and Cleistoporidae from the Emsian and Eifelian of various localities in northern and central Spain. The species Pleurodictyum elisabetae sp. nov. is erected. Michelinia guerangeri (Milne-Edwards & Haime, 1851) and Cleistopora smythi Le Maître, 1952 are described for the first time from Spain. The Spanish fauna’s biogeographical relationships to France, Germany and northern Africa are very close. The Spanish fauna belongs to the Ibarmaghian Domain of the North Gondwana Province. The biostratigraphical value of the species found is very limited. • Key words: Anthozoa, biogeography, Devonian, systematics, tabulate corals, Spain.

MAY, A. 2006. Micheliniidae and Cleistoporidae (Anthozoa, Tabulata) from the Devonian of Spain. Bulletin of Geosciences 81(3), 163–172 (1 figure). Czech Geological Survey, Prague. ISSN 1214-1119. Typescript received May 29, 2006; accepted in revised form July 26, 2006; issued September 30, 2006.

Andreas May, Saint Louis University – Madrid campus, Avenida del Valle 34, E-28003 Madrid, Spain; maya@madrid. slu.edu

A biostratigraphical and palaeoecological study of the Pleistocene marine fauna from the Kallithea area (northeast Rhodes, Greece) has been conducted. In this area, the Lindos Bay Clay and the Cape Arkhangelos Calcarenite, which constitute the Rhodes Formation, are well exposed in ancient quarries. The study has revealed the presence of 120 mollusc taxa, viz scaphopods (3 taxa), bivalves (65), gastropods (52) and indeterminate polyplacophorans, together with brachiopods (6 taxa), corals (3) and serpulids (7). The fauna of the Lindos Bay Clay contains counterparts of the modern biocoenoses of the coastal detritic (DC) and muddy detritic bottoms (DE), whereas the Cape Arkhangelos Calcarenite shows evidence of the coralligenous biocoenosis (C), the biocoenosis of the “Posidonia” meadows (HP), the biocoenosis of the photophilic algae (AP), the biocoenosis of fine-grained, well-sorted sand (SFBC), and the biocoenosis of coarse-grained sands and fine gravels under bottom currents (SGCF). The Windmill Bay Boulder Bed and the Kleopolu Calcirudite, which comprise the overlying Lindos Acropolis Formation, contain indeterminate bivalves and gastropods between eroded blocks from the Cape Arkhangelos Calcarenite. The Lindos Acropolis Formation shows remains of the coralligenous biocoenosis (C). The taxa identified confirm the warm-temperate conditions in the northeastern Mediterranean during the Pleistocene. Finds of Arctica islandica, which can be considered a “northern guest”, indicate the Pleistocene age of the Cape Arkhangelos Calcarenite. Two uranium/thorium dates of bivalves also support this age. Pteropods in the uppermost Lindos Bay Clay also suggest a Pleistocene age. • Key words: marine invertebrates, Pleistocene, Rhodes Formation, Lindos Acropolis Formation, Greece.

NIELSEN, J.K., HANKEN, N.-M., NIELSEN, J.K.& HANSEN, K.S. 2006. Biostratigraphy and palaeoecology of the marine Pleistocene of Rhodes, Greece: Scleractinia, Serpulidae, Mollusca and Brachiopoda. Bulletin of Geosciences 81(3), 173–196 (7 figures, 3 tables). Czech Geological Survey, Prague. ISSN 1214-1119. Typescript received March 22, 2006; accepted in revised form August 7, 2006; issued September 30, 2006.

Jan Kresten Nielsen, Statoil ASA, Exploration & Production Norway, P.O. Box 273, NO-7501 Stjø rdal, Norway; bioerosion@yahoo.dk • Nils-Martin Hanken & Jesper Kresten Nielsen, Department of Geology, University of Tromsø , Dramsveien 201, NO-9037 Tromsø , Norway • Kim Sten Hansen, VUC FYN, Enggade 15, DK-5000 Odense C, Denmark

This paper examines the influence of Lower Cambrian metal-rich black shales and locally mined black shale-hosted Ni-Mo ore layers of southern China on the concentrations of selected toxic trace elements in soils. In order to better understand the mobility of toxic trace elements, and to evaluate the potential risk of environmental contamination, a sequential extraction analysis from soil horizons A, B, C1 and C2 in the area of the Jiepo-Ling Mo-Ni mine (Zunyi region) was carried out. Geochemical analyses confirmed significant enrichments of As, Mo, V and slightly lower proportions of Pb and Ni in the A-horizon relative to a local reference sample of uncontaminated soil. This contamination is anthropogenic, probably caused by the release of metal-rich black shale particles during mining operations. Conversely, the distribution of V and Cr in soils is controlled by the host rock. The results of sequential extraction analyses from individual soil horizons showed that almost all As, Ni, V, Cr and Zn are bound to the residual fraction. Some of the Mo (15.13–39.75%) was found to be associated with the organic matter/sulphide fraction. The distribution of Pb and Hg is erratic, indicating considerable mobility of these elements in the soil profile. In Hg-enriched horizons (B and C1) most Hg (78.21–78.95% of the total content) occurs in the organic matter/sulphide fraction. The concentrations of Mo, Ni, Cr, V, Zn and Hg found in different parts of selected agricultural plants (e.g., tobacco leaves, corn grains, corn leaves, and corn stalks) exceed normal values given by Kabata-Pendias & Pendias (1984). We emphasise that long-term consumption of these products could result in serious health problems for the human population and domestic animals. Arsenic and lead concentrations were found to be within the range of normal values given for agricultural plants. • Key words: metals in soils, extraction analyses, metal-rich black shales, environmental implications, south China.

POÒAVIÈ, M., PAŠAVA, J., VYMAZALOVÁ, A., KØÍBEK, B., HAILIN DENG, TAIJI LUO, CHAOYANG LI & MINGGUO ZENG 2006. Fractionation of toxic trace elements in soils around Mo-Ni black shale-hosted mines, Zunyi region, southern China: Environmental implications. Bulletin of Geosciences 81(3), 197–206 (2 figures, 5 tables). Czech Geological Survey, Prague. ISSN 1214-1119. Typescript received April 10, 2006; accepted in revised form September 15, 2006; issued September 30, 2006.

Michal Poòaviè, Jan Pašava, Anna Vymazalová & Bohdan Køíbek, Czech Geological Survey, Klárov 131/3, 118 21 Praha 1, Czech Republic; ponavic@cgu.cz, pasava@cgu.cz • Hailin Deng, Taiji Luo & Chaoyang Li, Institute of Geochemistry, Open Laboratory of Ore Deposit Geochemistry, Chinese Academy of Science, Guanshui Road 73, Guiyang 550002, People’s Republic of China; lcyolodg@sohu.com • Mingguo Zeng, Institute of Geology, Guizhou Bureau of Geology and Mineral Exploration and Development, Guiyang, Guizhou 550004, People’s Republic of China

The present article recommends the emendation of the species Calamostachys incrassata, proposed by Nìmejc (1953), which was based on one specimen from the Rako Mine near Lubná in the Kladno-Rakovník Basin. The stratigraphical position of the specimen is the Lower Bolsovian. The inner morphology of Calamostachys incrassata and its in situ spores are described for the first time. The morphology of Calamostachys incrassata cones differs from that of all other known species of calamitean strobili. Most in situ microspores possess a very thin pseudosaccus-like layer that envelopes the trilete inner body of the Calamospora-type. Microspores with an outer exine layer are morphologically similar to some dispersed miospore species of the genera Auroraspora, Remysporites, Callialasporites, Perotrilites, Phyllothecotriletes and Diaphanospora. • Key words: Calamites, in situ spores, Calamospora, Calamostachys, Pennsylvanian, Czech Republic.

LIBERTÍN, M. & BEK, J. 2006. Bolsovian Calamostachys incrassata (Nìmejc) emend. and its spores from the Kladno-Rakovník Basin of the Czech Republic. Bulletin of Geosciences 81(3), 207–213 (4 figures). Czech Geological Survey, Prague. ISSN 1214-1119. Typescript received April 4, 2006; accepted in revised form September 2, 2006; issued September 30, 2006.

Milan Libertín, National Museum, Václavské námìstí 64, 118 21 Prague 1, Czech Republic; milan_ libertin@nm.cz • Jiøí Bek, Academy of Sciences of the Czech Republic, Institute of Geology, Laboratory of Palaeobiology and Palaeoecology, Rozvojová 269, 165 00 Prague 6, Czech Republic; mrbean@gli.cas.cz