Showing results 41 to 60 of 198
  Commission Internationale de la Microflore du Paléozoïque (CIMP)Steemans, Philippe  Computer development (2008) Detailed reference viewed: 5 (0 ULg) Siluro-Devonian miospore biostratigraphy of the Urubu River area, western Amazon Basin, northern BrazilSteemans, Philippe ; ; in Geobios (2008), 41 Detailed reference viewed: 11 (2 ULg)Lochkovian (Early Devonian) acritarchs and prasinophytes from the Solimões Basin, nortwestern Brazil; ; Steemans, Philippe in Neues Jahrbuch für Geologie und Palaontologie. Abhandlungen (2008), 249(2), 167-184 Detailed reference viewed: 21 (1 ULg)Palaeophytogeographical and palaeoecological implications of a miospore assemblage of earliest Devonian (Lochkovian) age from Saudi ArabiaSteemans, Philippe ; ; in Palaeogeography, Palaeoclimatology, Palaeoecology (2007), 250(1-4), 237-254 Palynological samples from two boreholes drilled in the eastern part of Saudi Arabia contain a rich assemblage of cryptospores and trilete spores. They are dated as most probably Lochkovian in age ... [more ▼] Palynological samples from two boreholes drilled in the eastern part of Saudi Arabia contain a rich assemblage of cryptospores and trilete spores. They are dated as most probably Lochkovian in age. Intriguingly, the cryptospores are very similar to those from a coeval continental palynomorph assemblage from the Old Red Sandstone Continent, whereas the trilete spores show a strong affinity with miospore assemblages from Western Gondwana. It is suggested that cryptospore-producing plants inhabited confined, damp biotopes and had a wide range of climatic tolerance. On the otherhand, trilete spore-producing plants inhabited a wider variety of biotopes but were more sensitive to climatic variations. The high degree of similarity between Old Red Sandstone and Saudi Arabian cryptospore assemblages favours palaeogeographic reconstructions where there is close proximity between Western Gondwana and Euramerica and/or a land connection between these palaeoplates. Climatic differences between the Old Red Sandstone Continent and the northern part of Western Gondwana can be invoked to explain the variations in the trilete spore assemblages. (c) 2007 Elsevier B.V. All rights reserved. [less ▲] Detailed reference viewed: 17 (4 ULg)New palynological data from the Devonian Villavicencio Formation, Precordillera of Mendoza, Argentina; Steemans, Philippe in Ameghiniana (2007), 44(1), 3-9 New terrestrial and marine palynomorphs of the lower part of the Villavicencio Formation, San Isidro Creek, Precordillera of Mendoza, Argentina, are evaluated. The palynomorph assemblage is dominated by ... [more ▼] New terrestrial and marine palynomorphs of the lower part of the Villavicencio Formation, San Isidro Creek, Precordillera of Mendoza, Argentina, are evaluated. The palynomorph assemblage is dominated by miospores, and also contains acritarchs and scarce chitinozoans. Different processing methods have been tested due to the poor preservation state of the palynomorphs. The new slides provided abundant and diverse palynomorphs and allowed the recognition of 13 miospore species and two acritarch species. This review suggests a late Pragian to early Emsian age, thus confirming and refining previous palynological dating. The miospore assemblage may be correlated with the upper part of the Ems Biozone in terms of the Devonian miospore zonation of the Brazilian Amazon Basin. Palaeogeographically; acritarchs show perigondwanan affinities. In the light of this refined age determination, the stratigraphic and phytogeographic inferences for the Precordillera land plants should be reconsidered. [less ▲] Detailed reference viewed: 50 (11 ULg)Resultados Palinoestratigráficos do Devoniano da Sub-Bacia de Alto Garças (Bacia do Paraná - Brasil); ; et al in Carvalho, I.S.; Cassab, R.C.T.; Schwanke, C. (Eds.) et al Paleontologia: cenários de Vida (2007) Detailed reference viewed: 26 (1 ULg)Early to Middle Devonian miospores from northern Saudi Arabia; ; et al in Revue de Micropaléontologie (2007), 50 Detailed reference viewed: 23 (8 ULg)Some considerations on Devonian miospore taxonomy; ; Steemans, Philippe in Carnets de Géologie = Notebooks on Geology (2007), Mémoire 2007/01, CG2007 M01 Detailed reference viewed: 17 (2 ULg)Givetian megaspores from Libya and BelgiumSteemans, Philippe ; ; Gerrienne, Philippe et alConference (2007) Detailed reference viewed: 1 (0 ULg)Recent advances in palynologySteemans, Philippe ; Javaux, Emmanuelle in Carnets de Géologie = Notebooks on Geology (2007), Memoir 2007/01 Detailed reference viewed: 22 (2 ULg)Middle Devonian (Givetian) megaspores from Belgium (Ronquières) and Libya (A1-69 borehole); ; Gerrienne, Philippe et alin Carnets de Géologie = Notebooks on Geology (2007), CG2007(M01/02), 68-73 Preliminary results are presented on newly discovered megaspore assemblages recovered from Givetian localities at Ronquières, Belgium, and a borehole (A1-69) drilled in the Ghadames Basin, Libya, by SHELL ... [more ▼] Preliminary results are presented on newly discovered megaspore assemblages recovered from Givetian localities at Ronquières, Belgium, and a borehole (A1-69) drilled in the Ghadames Basin, Libya, by SHELL in 1959. The miospore biostratigraphy of the Ronquières and of A1-69 borehole sections has been published (Ville de Goyet, 2005; Gerrienne et alii, 2004; Loboziak & Streel, 1989; Loboziak et alii, 1992; Streel et alii, 1990). [less ▲] Detailed reference viewed: 64 (11 ULg)A classification of spores by support vectors based on an analysis of their ornament spatial distribution - An application to Emsian miospores from Saudi Arabia; ; et al in Carnets de Géologie = Notebooks on Geology (2007), CG2007(M01/02), 9-15 Detailed reference viewed: 26 (7 ULg)Miospores of the PalaeozoicSteemans, Philippe Scientific conference (2007) Detailed reference viewed: 6 (0 ULg)PalyWeb: A palynomorph database project on the webSteemans, Philippe ; in Steemans, Philippe; Javaux, Emmanuelle (Eds.) Recent Advances in Palynology (2007) Detailed reference viewed: 15 (0 ULg)Liège, Belgium: 50 years of palynologySteemans, Philippe Report (2007) Detailed reference viewed: 43 (6 ULg)Silurian and Early Lower Devonian miospores from South AmericaSteemans, Philippe ; Conference (2006) Detailed reference viewed: 1 (0 ULg)Silurian marine and terrestrial palynomorphs of Quebrada Ancha, Central Precordillera Basin, San Juan Province, Argentina; Steemans, Philippe ; Conference (2006) Detailed reference viewed: 4 (1 ULg)Ovulate structure early origin and diversification: did something happen during the Givetian?Prestianni, Cyrille ; ; et alConference (2006) Detailed reference viewed: 4 (2 ULg) |
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