References of "Steemans, Philippe"
     in
Bookmark and Share    
Full Text
Peer Reviewed
See detailMarine and fresh water palynomorphs from the Jauf Formation, Northwest Saudi Arabia
Miller, A.; Breuer, P.; Al-Ghazi, A. et al

Conference (2008)

Detailed reference viewed: 3 (0 ULg)
Full Text
Peer Reviewed
See detailA distinctive marginal marine palynological assemblage from the Pridoli of Northwestern Saudi Arabia
Al-Hajri, S.; Verniers, J.; Paris, F. et al

Conference (2008)

This paper describes a rare occurrence of a rich and diverse palynological assemblage from a controversial stratigraphic unit in well EW8 in northwestern Saudi Arabia. The composition of this assemblage ... [more ▼]

This paper describes a rare occurrence of a rich and diverse palynological assemblage from a controversial stratigraphic unit in well EW8 in northwestern Saudi Arabia. The composition of this assemblage strongly suggests a Pridoli age and therefore it is referred here to the Tawil Formation. The assemblage encountered contains very characteristic chitinozoans, acritarchs, tasmanities, scolecodontsm, eurypterid cuticle and common land-derived miospores and hilate cryptospores. Chitinozoans such as Margachitina elegans, Ancyrochitina fragilis brevis, Ancyrochitina fragilis, Sphaerochitina sphaerocephala, Urnochitina urna, Pseudochlathrochitina carmenchui and Lagenochitina brevicollis confer the Pridoli age assignment. This assemblage of chitinozoans correlates very well with Assemblage D from the Alternances Gréso-Argileuses Formation of the A1-61 well in northwestern Libya. Among the acritarchs present are: Cymbosphaeridium pilar, Leoniella carminae,Diexallophasis spp., Tunisphaeridium cf caudatum, Leiofusa estrecha and Eupoikilofusa striatifera. <br /> <br />Furthermore, the join occurrence of U. urna, P. carmenchui and M. elegans is clearly indicative of the middle part of the Pridoli as in the Libyan well A1-61, and in many wells in Algeria. This corresponds to what is considered to be a transgressive mid Pridoli event in the Algerian Sahara, with non marine intervals bracketing this brief marine sea level rise. This event is likely to have extended into all of north Gondwana including Arabia. [less ▲]

Detailed reference viewed: 27 (3 ULg)
See detailPalynology of the Palaeozoic
Steemans, Philippe ULg

Scientific conference (2008)

Detailed reference viewed: 13 (0 ULg)
Full Text
See detailLatest developments in palynology and palaeobotany
Steemans, Philippe ULg; Gerrienne, Philippe ULg

Book published by Paléogéobio. Paléobot. Paléopalyno. (2008)

Detailed reference viewed: 71 (18 ULg)
See detailPetrobras report January 2008
Steemans, Philippe ULg

Report (2008)

Detailed reference viewed: 8 (0 ULg)
Full Text
See detailCommission Internationale de la Microflore du Paléozoïque (CIMP)
Steemans, Philippe ULg

Computer development (2008)

Detailed reference viewed: 9 (0 ULg)
Full Text
Peer Reviewed
See detailSiluro-Devonian miospore biostratigraphy of the Urubu River area, western Amazon Basin, northern Brazil
Steemans, Philippe ULg; Rubinstein, C.; Melo, J. H. G.

in Geobios (2008), 41

Detailed reference viewed: 13 (2 ULg)
Full Text
Peer Reviewed
See detailLochkovian (Early Devonian) acritarchs and prasinophytes from the Solimões Basin, nortwestern Brazil
Rubinstein, C. V.; Le Hérissé, A.; Steemans, Philippe ULg

in Neues Jahrbuch für Geologie und Palaontologie. Abhandlungen (2008), 249(2), 167-184

Detailed reference viewed: 23 (1 ULg)
Full Text
Peer Reviewed
See detailPalaeophytogeographical and palaeoecological implications of a miospore assemblage of earliest Devonian (Lochkovian) age from Saudi Arabia
Steemans, Philippe ULg; Wellman, C. H.; Filatoff, J.

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: 21 (4 ULg)
Full Text
Peer Reviewed
See detailNew palynological data from the Devonian Villavicencio Formation, Precordillera of Mendoza, Argentina
Rubinstein, C. V.; Steemans, Philippe ULg

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: 56 (11 ULg)
Full Text
See detailResultados Palinoestratigráficos do Devoniano da Sub-Bacia de Alto Garças (Bacia do Paraná - Brasil)
Mendlowicz Mauller, P.; Machado Cardoso, T. R.; Pereira, E. et al

in Carvalho, I.S.; Cassab, R.C.T.; Schwanke, C. (Eds.) et al Paleontologia: cenários de Vida (2007)

Detailed reference viewed: 28 (1 ULg)
Full Text
Peer Reviewed
See detailEarly to Middle Devonian miospores from northern Saudi Arabia
Breuer, P.; Al-Ghazi, A.; Al-Ruwaili, M. et al

in Revue de Micropaléontologie (2007), 50

Detailed reference viewed: 24 (8 ULg)
Full Text
Peer Reviewed
See detailSome considerations on Devonian miospore taxonomy
Breuer, P.; Filatoff, J.; Steemans, Philippe ULg

in Carnets de Géologie = Notebooks on Geology (2007), Mémoire 2007/01, CG2007 M01

Detailed reference viewed: 20 (2 ULg)
Peer Reviewed
See detailGivetian megaspores from Libya and Belgium
Steemans, Philippe ULg; Breuer, P.; Gerrienne, Philippe ULg et al

Conference (2007)

Detailed reference viewed: 4 (0 ULg)
Full Text
Peer Reviewed
See detailRecent advances in palynology
Steemans, Philippe ULg; Javaux, Emmanuelle ULg

in Carnets de Géologie = Notebooks on Geology (2007), Memoir 2007/01

Detailed reference viewed: 30 (2 ULg)
Full Text
Peer Reviewed
See detailMiddle Devonian (Givetian) megaspores from Belgium (Ronquières) and Libya (A1-69 borehole)
De Ville de Goyet, F.; Breuer, P.; Gerrienne, Philippe ULg et al

in 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: 72 (11 ULg)
Full Text
Peer Reviewed
See detailA classification of spores by support vectors based on an analysis of their ornament spatial distribution - An application to Emsian miospores from Saudi Arabia
Breuer, P.; Dislaire, G.; Filatoff, J. et al

in Carnets de Géologie = Notebooks on Geology (2007), CG2007(M01/02), 9-15

Detailed reference viewed: 29 (7 ULg)
See detailMiospores of the Palaeozoic
Steemans, Philippe ULg

Scientific conference (2007)

Detailed reference viewed: 6 (0 ULg)
Full Text
Peer Reviewed
See detailPalyWeb: A palynomorph database project on the web
Steemans, Philippe ULg; Breuer, P.

in Steemans, Philippe; Javaux, Emmanuelle (Eds.) Recent Advances in Palynology (2007)

Detailed reference viewed: 27 (0 ULg)