caa a22 4500 388017643 CHVBK 20180307124915.0 cr unu---uuuuu 161130e199811 xx s 000 0 eng 10.1017/S0022336000027335 doi S0022336000027335 pii (NATIONALLICENCE)cambridge-10.1017/S0022336000027335 Dixon Owen A. Department of Geology, University of Ottawa and Ottawa-Carleton Geoscience Centre, Ottawa K1N 6N5, Canada Heliolitine corals of the topmost Douro and overlying formations (Upper Silurian), Canadian Arctic islands [Elektronische Daten] [Owen A. Dixon] Heliolitine corals occur in Upper Silurian strata of the topmost Douro, lower Barlow Inlet, and lower Somerset Island formations in the Boothia Uplift region. The fauna includes Heliolites (nine species), Propora (two species), the stelliporellid genera Podollites (three species) and Stelliporella (one species), and the plasmoporid Squameolites (one species). Species present but not previously reported from the region include Heliolites arcuatus Bondarenko, Heliolites uksunayensis Mironova, Stelliporella ilensis Bondarenko, Podollites assitus new species, Podollites parryi new species, Podollites plectilis new species, Propora tubulata (Lonsdale) and an unidentified species of Propora. All species occur in reef and reef-associated facies of open carbonate shelf and ramp settings. In restricted nonreefal carbonate shelf settings, diversity attenuates to a minimum, exemplified by numerically abundant monospecific assemblages of Heliolites uksunayensis. Six of the 16 morphotaxonomic units recognized compare with species reported previously in Silurian faunas of Kazakhstan and Mongolia. Combinations of characters in the species attributed to Podollites support revision of the genus, possibly to include Derivatolites and Tarbagatailites, in a group morphologically intermediate between Stelliporella and Heliolites. Copyright © The Paleontological Society Journal of Paleontology Cambridge University Press 72/6(1998-11), 937-966 0022-3360 72:6<937 1998 72 JPA https://doi.org/10.1017/S0022336000027335 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0022336000027335 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Dixon Owen A. Department of Geology, University of Ottawa and Ottawa-Carleton Geoscience Centre, Ottawa K1N 6N5, Canada NATIONALLICENCE 773 0- Journal of Paleontology Cambridge University Press 72/6(1998-11), 937-966 0022-3360 72:6<937 1998 72 JPA CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge