P
Philippe Janvier
Researcher at Centre national de la recherche scientifique
Publications - 157
Citations - 5344
Philippe Janvier is an academic researcher from Centre national de la recherche scientifique. The author has contributed to research in topics: Devonian & Vertebrate. The author has an hindex of 40, co-authored 155 publications receiving 4987 citations. Previous affiliations of Philippe Janvier include University of Paris & Pierre-and-Marie-Curie University.
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Journal ArticleDOI
Agnathans and the origin of jawed vertebrates
Peter L. Forey,Philippe Janvier +1 more
TL;DR: The origins of jawed vertebrates (gnathostomes) lie somewhere within the ranks of long-extinct jawless fishes, represented today as the lampreys and hagfishes, and recent discoveries have revitalized debates about the relationships of ancient fishes and given fresh insights into early vertebrate history.
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Head and backbone of the Early Cambrian vertebrate Haikouichthys
Degan Shu,Degan Shu,S. Conway Morris,Jian Han,Zhifei Zhang,K. Yasui,Philippe Janvier,Philippe Janvier,L. Chen,Xingliang Zhang,Jianni Liu,Yong Li,H.-Q. Liu +12 more
TL;DR: Phylogenetic analysis indicates that Haikouichthys somewhat resembles the ammocoete larva of modern lampreys, this is because of shared general craniate characters; adult lampreys and hagfishes (the cyclostomes if monophyletic) are probably derived in many respects.
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Large colonial organisms with coordinated growth in oxygenated environments 2.1 Gyr ago.
Abderrazak El Albani,Stefan Bengtson,Donald E. Canfield,Andrey Bekker,Roberto Macchiarelli,Arnaud Mazurier,Emma U. Hammarlund,Philippe Boulvais,Jean-Jacques Dupuy,Claude Fontaine,Franz T. Fürsich,François Gauthier-Lafaye,Philippe Janvier,Emmanuelle Javaux,Frantz Ossa Ossa,Anne-Catherine Pierson-Wickmann,Armelle Riboulleau,Paul Sardini,Daniel Vachard,Martin J. Whitehouse,Alain Meunier +20 more
TL;DR: The discovery of centimetre-sized structures from the 2.1-Gyr-old black shales of the Palaeoproterozoic Francevillian B Formation in Gabon are reported, which are interpreted as highly organized and spatially discrete populations of colonial organisms.
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The phylogeny of the Craniata, with particular reference to the significance of fossil “agnathans”
TL;DR: It is concluded that the fossil jawless Craniata provide little information on the affinities of the CraniATA, but they do provide complementary data on distribution of characters.
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Jaw transformation with gain of symmetry after Dlx5/Dlx6 inactivation: Mirror of the past?
Annemiek Beverdam,Giorgio R. Merlo,Laura Paleari,Stefano Mantero,Francesca Genova,Ottavia Barbieri,Philippe Janvier,Giovanni Levi +7 more
TL;DR: This finding supports the notion that Dlx genes are homeotic genes associated with morphological novelty in the vertebrate lineage and first homeotic‐like transformation found in this Hox‐free region after gene inactivation.