References of "Gerrienne, Philippe"
     in
Bookmark and Share    
See detailThe Early Devonian plants from the Ancenis Basin (Armorican Massif, France): one century later...
Strullu-Derrien, Marie-Christine; Gerrienne, Philippe ULg

Conference (2008)

Detailed reference viewed: 8 (2 ULg)
See detailTowards a new definition of Cooksonia Lang, 1937
Gonez, Paul ULg; Gerrienne, Philippe ULg

Conference (2008)

Detailed reference viewed: 6 (0 ULg)
See detailLate Devonian plants from Australia: the anatomically preserved flora from Barraba, New South Wales.
Meyer-Berthaud, Brigitte; Blanchard, Romain; Decombeix, Anne-Laure et al

Conference (2008)

Detailed reference viewed: 12 (0 ULg)
Full Text
Peer Reviewed
See detailStrud: Old quarry, new discoveries. Preliminary report.
Prestianni, Cyrille ULg; Streel, Maurice ULg; Thorez, Jacques ULg et al

in Carnets de Géologie = Notebooks on Geology (2007), 2007(01), 43-47

Detailed reference viewed: 8 (3 ULg)
Full Text
Peer Reviewed
See detailThe proto-ovule Runcaria heinzelinii Stockmans 1968 emend. Gerrienne et al., 2004 (mid-Givetian, Belgium): Concept and epitypification.
Gerrienne, Philippe ULg; Meyer-Berthaud, Brigitte

in Review of Palaeobotany and Palynology (2007), 145(3-4), 321-323

The proto-ovule Runcaria heinzelinii Stockmans 1968 has been re-described and interpraed as a precursor of seed plants; its generico-specifica diagnosis has been emended [Gerrienne, P., Meyer-Berthaud, B ... [more ▼]

The proto-ovule Runcaria heinzelinii Stockmans 1968 has been re-described and interpraed as a precursor of seed plants; its generico-specifica diagnosis has been emended [Gerrienne, P., Meyer-Berthaud, B., Fairon-Demaret, M., Streel, M., Steemans, P. 2004. Runcaria, a Middle Devonian seed plant precursor. Science 306, 856-858.]. Here we define the concept of "proto-ovule" and designate an epitype to support the uninformative and poorly preserved holotype [Stockmans, F., 1968. Vegetaux mesodevoniens recoltes aux confins du Massif du Brabant (Belgique). Inst. Roy. Sci. Nat. Belg. Mem. 159, 1-49., Plate VII: 8a]. (c) 2007 Elsevier B.V. All rights reserved. [less ▲]

Detailed reference viewed: 15 (2 ULg)
Full Text
Peer Reviewed
See detailQuelques implications paléoclimatiques de l'observation de bois fossiles du Wealdien du bassin de Mons (Belgique) - Résultats préliminaires.
Gerards, Thomas ULg; Yans, Johan; Gerrienne, Philippe ULg

in Carnets de Géologie = Notebooks on Geology (2007), 2007(01), 29-34

Detailed reference viewed: 19 (3 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: 2 (0 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: 69 (11 ULg)
See detailEmbryophytes on land: the early steps.
Gerrienne, Philippe ULg

Conference (2007)

Detailed reference viewed: 1 (0 ULg)
Full Text
Peer Reviewed
See detailComparison of cross-field pitting in fresh, dried and charcoalified softwoods
Gerards, Thomas ULg; Damblon, Freddy ULg; Wauthoz, B. et al

in Iawa Journal (2007), 28(1), 49-60

Cross-field pitting is one of the most reliable characters for softwood identifi cation. During charcoalification, a range of severe qualitative and quantitative modifications may occur in cross-field ... [more ▼]

Cross-field pitting is one of the most reliable characters for softwood identifi cation. During charcoalification, a range of severe qualitative and quantitative modifications may occur in cross-field pitting. As most fossil or archaeological wood remains are preserved as charcoal (fusain), the question arises whether these modifications hamper the accurate identification of some taxa. This work is a systematic biometric study of a wide range of gymnosperm cross-field pitting after experimental charcoalification. We focused on the window-like, piceoid, taxodioid, cupressoid, araucarioid and podocarpoid cross-field pitting types. Our main results are the following: 1) Cross-field pits of wood specimens dried out before charcoalification are hidden by a thin closing wall; in this case, it is often impossible to discriminate between the various types of cross-field pitting. 2) Piceoid cross-field pitting becomes taxodioid-like after charcoalification. 3) Biometric study of charred softwood cross-field pitting dimensions shows that the ratios between height and width of pit aperture and border allow us to distinguish and characterise four types of pitting (window-like, piceoid, taxodioid, cupressoid + araucarioid + podocarpoid [= CAP]). The discrimination within the CAP type requires further investigation. [less ▲]

Detailed reference viewed: 64 (1 ULg)
Full Text
Peer Reviewed
See detailLectotypification of the Famennian pre-ovule Condrusia rumex Stockmans, 1948
Prestianni, Cyrille ULg; Gerrienne, Philippe ULg

in Review of Palaeobotany and Palynology (2006), 142(3-4), 161-164

Condrusia rumex Stockmans 1948 occurs in several localities of the Belgian Evieux Formation (late Famennian, Upper Devonian). It consists of a hastate organ borne at the tip of "slender, dichotomizing ... [more ▼]

Condrusia rumex Stockmans 1948 occurs in several localities of the Belgian Evieux Formation (late Famennian, Upper Devonian). It consists of a hastate organ borne at the tip of "slender, dichotomizing" axes. Various interpretations have been given to this intriguing structure, ranging from a spore-bearing organ to a fern prothallus but recent investigations consider Condrusia to be an ovulate structures produced by early seed plants. The genus Condrusia includes 3 species: C rumex Stockmans, C. minor Stockmans and C. brevis Petrosjan. C rumex was described by Stockmans in 1948, who provided a diagnosis and illustrations, but failed to designate a holotype. We are currently reinvestigating the genus and we here designate and illustrate a lectotype for the genus and species C. rumex. (c) 2006 Elsevier B.V. All rights reserved. [less ▲]

Detailed reference viewed: 31 (5 ULg)
Full Text
Peer Reviewed
See detailPreface: A tribute to Muriel Fairon-Demaret
Gerrienne, Philippe ULg

in Review of Palaeobotany and Palynology (2006), 142(3-4), 61-61

Detailed reference viewed: 10 (1 ULg)
Full Text
Peer Reviewed
See detailAn exceptional specimen of the early land plant Cooksonia paranensis, and a hypothesis on the life cycle of the earliest eutracheophytes
Gerrienne, Philippe ULg; Dilcher, D. L.; Bergamaschi, S. et al

in Review of Palaeobotany and Palynology (2006), 142(3-4), 123-130

An exceptionally large specimen of the early land plant Cooksonia paranensis Gerrienne et al. has been discovered from the type locality (Jackson de Figueiredo, Parana Basin, Brazil; early Lochkovian ... [more ▼]

An exceptionally large specimen of the early land plant Cooksonia paranensis Gerrienne et al. has been discovered from the type locality (Jackson de Figueiredo, Parana Basin, Brazil; early Lochkovian, Early Devonian). This nearly complete specimen consists of five dichotomous axes attached at their base to a small thalloid(?) structure. Each terminal axis segment ends in an expanded, cup-like, empty tip. Three interpretations of the specimen are proposed. (1) The whole specimen is a gametophyte of the Sciadopkyton-type, with a central area from which five axes depart; under this interpretation, the terminal cups are gametangiophores. (2) The basal structure represents the remains of a rhizome bearing five upright aerial axes, in which case the whole plant is a sporophyte. (3; our favoured hypothesis) The specimen is a cluster of five individual sporophytes still attached to the remains of a small female or bisexual gametophyte. In the latter case, this fossil is evidence that reduced thalloid gametophytes and branched axial sporophytes are plesiomorphic among the earliest eutracheophytes. We suggest that a major difference in life cycle defines a basal dichotomy in tracheophytes. Eutracheophyta, including all living vascular plants, have a heteromorphic, sporophyte dominant alternation of generations, whereas their extinct sister-group Rhymopsida (renamed here Paratracheophyta) is characterised by a more or less isomorphic alternations of generations. (c) 2006 Elsevier B.V. All rights reserved. [less ▲]

Detailed reference viewed: 53 (0 ULg)
Peer Reviewed
See detailOvulate structure early origin and diversification: did something happen during the Givetian?
Prestianni, Cyrille ULg; Ville de Goyet, F. de; Breuer, P. et al

Conference (2006)

Detailed reference viewed: 8 (4 ULg)
See detailPalaeozoic Palaeobotany
Gerrienne, Philippe ULg

Book (2006)

Special Issue of the Review of Palaeobotany and Palynology

Detailed reference viewed: 5 (0 ULg)
Full Text
Peer Reviewed
See detailThe Middle-Devonian proto-ovule Runcaria heinzelinii Stockmans 1968
Gerrienne, Philippe ULg; Meyer-Berthaud, B.; Fairon-Demaret, Muriel ULg et al

Conference (2005)

Detailed reference viewed: 27 (0 ULg)
Full Text
Peer Reviewed
See detailThe significance of Runcaria (Middle Devonian, Belgium) in the evolution of seed plants.
Gerrienne, Philippe ULg; Meyer-Berthaud, Brigitte; Fairon-Demaret, Muriel

in Carnets de Géologie = Notebooks on Geology (2005), 2005(02), 25-31

Detailed reference viewed: 7 (0 ULg)
Full Text
Peer Reviewed
See detailRuncaria, a middle Devonian seed plant precursor
Gerrienne, Philippe ULg; Meyer-Berthaud, B.; Fairon-Demaret, Muriel ULg et al

in Science (2004), 306(5697), 856-858

The emergence of the seed habit in the Middle Pateozoic was a decisive evolutionary breakthrough. Today, seed plants are the most successful plant lineage, with more than 250,000 living species. We have ... [more ▼]

The emergence of the seed habit in the Middle Pateozoic was a decisive evolutionary breakthrough. Today, seed plants are the most successful plant lineage, with more than 250,000 living species. We have identified a middle Givetian (385 million years ago) seed precursor from Belgium predating the earliest seeds by about 20 million years. Runcaria is a small, radially symmetrical, integumented megasporangium surrounded by a cupule. The megasporangium bears an unopened distal extension protruding above the multilobed integument. This extension is assumed to be involved in anemophilous pollination. Runcaria sheds new light on the sequence of character acquisition leading to the seed. [less ▲]

Detailed reference viewed: 57 (18 ULg)