Dario De Franceschi

Sorbonne Université

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i-10 index

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Co-Authors

Anaïs Boura

Sorbonne Université

Cédric Del Rio

Sorbonne Université

Grégoire Métais

Centre National de la Recherche Scientifique

Alexis Licht

Centre de Recherche et d’Enseignement de Géosciences de l’Environnement

Jean‐Loup Welcomme

Institut des Sciences de l'Evolution de Montpellier

Laurent Marivaux

Centre National de la Recherche Scientifique

Jean‐Yves Crochet

Centre National de la Recherche Scientifique

Pierre‐Olivier Antoine

Institut de Recherche pour le Développement

Romain Thomas

Université Paris Nanterre

Jean‐Jacques Jaeger

Université de Poitiers

Cooperative Institutions

Centre National de la Recherche Scientifique

Sorbonne Université

Structure et Instabilité des Génomes

Institute of Paleoprimatology Human Paleontology Evolution and Paleoenvironments

Muséum national d'Histoire naturelle

Université de Montpellier

Chinese Academy of Sciences

Institut des Sciences de l'Evolution de Montpellier

Centre de recherche en paléontologie - Paris

Institut de Recherche pour le Développement

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New remains of the baluchithere Paraceratherium bugtiense from the Late/latest Oligocene of the Bugti hills, Balochistan, Pakistan

Journal of Asian Earth Sciences (2004)

Pierre‐Olivier Antoine S. M. Ibrahim Shah Iqbal Umer Cheema Jean‐Yves Crochet Dario De Franceschi

Postcrania

Manus

Sexual dimorphism

Type locality

10.1016/j.jaes.2003.09.005

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Citations (29)

Climatic evolution in Western Europe during the Cenozoic: insights from historical collections using leaf physiognomy

Geodiversitas (2020)

Mélanie Tanrattana Anaïs Boura Frédéric M.B. Jacques Loïc Villier François Fournier

A major climatic shift, from a glasshouse world to a colder climate with well-developed ice sheets, occurred during the Cenozoic. Such a transition is recorded in both marine and terrestrial records. The latter is more fragmentary and thus comparatively less well known from a climatic point of view. Leaves are abundant fossil remains, which can be used as terrestrial climatic proxies. In this study, several historical collections from France and Belgium were re-investigated. We applied the Climate Leaf Analysis Multivariate Program in order to document the regional past climate from middle Paleocene to middle Miocene in Western Europe. Our analysis suggest relatively cooler conditions during middle Paleocene, followed by a gradual increase of mean annual temperature and precipitation seasonality during late Paleocene; increased temperature seasonality rather than a global cooling at the Eocene-Oligocene transition; an increase of temperature between early and late Oligocene and warm temperate climate in Western Europe similar to other parts of Europe during middle Miocene. These results are broadly consistent with the global trends observed through the Cenozoic era in the marine record. This study provides new quantitative paleoclimatic estimates for various key periods of the Cenozoic era in Western Europe. The consistency of our results with previous studies based on multiples proxies is in favor of the use of historical collections to reconstruct past climates, as long as sufficient sampling is provided.

Paleoclimatology

Holocene climatic optimum

Climate oscillation

Global cooling

Seasonality

10.5252/geodiversitas2020v42a11

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Citations (32)

MORPHYLL: A database of fossil leaves and their morphological traits

Palaeontologia Electronica (2018)

Christopher Traiser Anita Roth‐Nebelsick Michaela Grein Johanna Kovar‐Eder Lutz Kunzmann

Morphometric characters of fossil leaves such as size and shape are important and widely used sources for reconstructing palaeoenvironments.Various tools, including CLAMP or Leaf Margin Analysis, utilize leaf traits as input parameters for estimating palaeoclimate, mostly based on correlations between traits and climate parameters of extant plants.During the last few years, the scope of information extracted from the morphology of fossil leaves has been further expanded by including leaf economics, which describe correlations between functional leaf traits and ecological strategies.The amount and quality of available data are essential for a successful palaeoecological analysis utilizing leaf traits.Here, the database MORPHYLL is described.This database is devised to offer a web-based resource for fossil leaf trait data.For this purpose, fossil leaves from various collections were digitized and morphometric traits extracted from leaf outlines.Besides metadata such as accession number, repository, fossil site or taxonomic information (for identified specimens), MORPHYLL offers queries for several morphometric parameters and derived ecophysiological traits (e.g., leaf mass per area).Currently, the database contains data from about 6000 fossil leaves from sites in Central Europe, spanning almost the entire Paleogene and part of the early Neogene.The application potential of the database is demonstrated by conducting some exemplary analyses of leaf traits for the Paleocene, Eocene and Oligocene, with the results indicating changes of mean leaf traits through time.For example, the results show leaf mass per area to peak during the Eocene, which is in accordance with general climate development during the Paleogene.

Fossil Record

10.26879/773

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Citations (18)

Is porous wood structure exclusive of deciduous trees?

Comptes Rendus Palevol (2007)

Anaïs Boura Dario De Franceschi

10.1016/j.crpv.2007.09.009

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Citations (30)

Icacinaceae fossil fruits from three sites of the Paris Basin (early Eocene, France): local diversity and global biogeographic implications

Geodiversitas (2020)

Cédric Del Rio Dario De Franceschi

The Icacinaceae family have an important fossil record, mainly in the Paleogene of North America and Europe. The importance of this family in the Paleogene of the Paris Basin has been investigated recently based on two assemblages, Le Quesnoy (Houdancourt) and Rivecourt (Oise), and here we treat the Icacinaceae from three additional early Eocene sites. The Passy site reveals the presence of a new species, Iodes passiciensis Del Rio & De Franceschi, sp. nov., unique in having 25-29 areoles with no freely ending ridgelets, small pores, and rounded ridges. Two other species described previously from the Paleocene of Rivecourt were also recorded. The Grès de Belleu site also includes the first occurrence of a Palaeophytocrene Reid & Chandler in the Paris Basin and an Iodes Blume specimen without precise assignment. Lastly, in the Prémontré site only one endocarp locule cast belonging to Icacinicaryites Pigg, Manchester & DeVore was recorded and described. Using data from all five sites, the diversity of Icacinaceae in the Paris Basin is discussed and biogeographic scenarios are developed.

Paleogene

10.5252/geodiversitas2020v42a2

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Citations (38)

Fossil woods from the lower Miocene of Myanmar (Natma Formation): paleoenvironmental and biogeographic implications

Nicolas Gentis Alexis Licht Anaïs Boura Dario De Franceschi Zaw Win

Earth and Space Science Open Archive This preprint has been submitted to and is under consideration at Other. ESSOAr is a venue for early communication or feedback before peer review. Data may be preliminary.Learn more about preprints preprintOpen AccessYou are viewing the latest version by default [v1]Fossil woods from the lower Miocene of Myanmar (Natma Formation): paleoenvironmental and biogeographic implicationsAuthorsNicolasGentisiDAlexisLichtiDAnaïsBouraDarioDe FranceschiZawWiniDDayWa AungGuillaumeDupont-NivetSee all authors Nicolas GentisiDSorbonne UniversitéiDhttps://orcid.org/0000-0003-1414-1237view email addressThe email was not providedcopy email addressAlexis LichtiDCorresponding Author• Submitting AuthorCEREGEiDhttps://orcid.org/0000-0002-5267-7545view email addressThe email was not providedcopy email addressAnaïs BouraMNHNview email addressThe email was not providedcopy email addressDario De FranceschiMNHNview email addressThe email was not providedcopy email addressZaw WiniDShwebo UniversityiDhttps://orcid.org/0000-0003-0003-3622view email addressThe email was not providedcopy email addressDay Wa AungYangon Universityview email addressThe email was not providedcopy email addressGuillaume Dupont-NivetUniversity of Rennes 1view email addressThe email was not providedcopy email address

10.1002/essoar.10506983.1

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An expanded diversity of oomycetes in Carboniferous forests: Reinterpretation of Oochytrium lepidodendri (Renault 1894) from the Esnost chert, Massif Central, France

PLoS ONE (2021)

Christine Strullu‐Derrien Marc Gèze Alan R.T. Spencer Dario De Franceschi Paul Kenrick

335-330 million-year-old cherts from the Massif Central, France, contain exceptionally well-preserved remains of an early forest ecosystem, including plants, fungi and other microorganisms. Here we reinvestigate the original material prepared by Renault and Roche from collections of the Muséum National d'Histoire Naturelle, Paris, and present a re-evaluation of Oochytrium lepidodendri (Renault 1894), originally described as a zoosporic fungus. Confocal laser scanning microscopy (CLSM) was used to study the microfossils, enabling us in software to digitally reconstruct them in three-dimensional detail. We reinterpret O. lepidodendri as a pseudofungus and favour placement within the oomycetes, a diverse clade of saprotrophs and both animal and plant parasites. Phylogenetically, O. lepidodendri appears to belong to a group of oomycetes distinct from those previously described from Paleozoic rocks and most likely related to the Peronosporales s.l. This study adds to our knowledge of Paleozoic eukaryotic diversity and reinforces the view that oomycetes were early and diverse constituents of terrestrial biotas, playing similar ecological roles to those they perform in modern ecosystems.

Massif

Reinterpretation

10.1371/journal.pone.0247849

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Citations (2)

Fruits of Icacinaceae Miers from the Palaeocene of the Paris Basin (Oise, France)

Earth and Environmental Science Transactions of the Royal Society of Edinburgh (2017)

Cédric Del Rio Romain Thomas Dario De Franceschi

ABSTRACT Icacinaceae Miers are a family of trees, shrubs, and lianas with a current pantropical distribution. The family is well known in the fossil record, especially from the Palaeogene of Europe and North America, with the modern genus Iodes being particularly well represented. Here, we describe five new species of Iodes based on fossil endocarps with horn-like protrusions from the late Palaeocene Rivecourt deposits (Oise, France). Moreover, we propose a new combination for Iodes israelii Soudry & Gregor, as Icacinicarytes israelii (Soudry & Gregor) Del Rio, Thomas & De Franceschi, because it lacks the diagnostic morphological and anatomical characters of the genus Iodes. The significance of papillae, which has been emphasised in the literature, is discussed in light of new data, and a more standardised system of terminology is proposed. Given that, among modern members of Iodes , horn-like protrusions are only known from Asian species; the fossils described here suggest an affinity between the late Palaeocene flora of Europe and the modern flora of Asia. Finally, this study represents the first detailed investigation of Icacinaceae from the Paris Basin, where palaeocarpology remains understudied.

Pantropical

Subfossil

Paleogene

Flora

Liana

10.1017/s1755691018000221

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Citations (11)

New remains of the baluchithere Paraceratherium bugtiense (Pilgrim, 1910) from the Late/latest Oligocene of the Bugti Hills, Balochistan, Pakistan.

HAL (Le Centre pour la Communication Scientifique Directe) (2004)

P.-O. Antoine Shalini Shah I.U. Cheema J.-Y. Crochet Dario De Franceschi

Pilgrim

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Une méthode simple de collecte de bois et d'écorce pour des études anatomiques.

HAL (Le Centre pour la Communication Scientifique Directe) (2008)

Anaïs Boura Dario De Franceschi

Les arbres et leur bois sont des composants essentiels de la biosphere. Le bois constitue une source d'information tres importante dans de nombreux domaines: systematique, ecologie ou evolution. Malgre l'interet de son etude, il n'est pas toujours collecte de maniere extensive, souvent a cause de problemes logistiques (collecte et transport des echantillons). Ce travail a pour but de recenser les differentes techniques de collectes existantes, de la tariere de Pressler au tout nouveau Trephor®, de proposer une methodologie specifique d'echantillonnage du bois et enfin de decrire une nouvelle methode de collecte. Simple et peu couteuse, necessitant l'utilisation d'un emporte-piece, d'un cylindre de bois ou de metal et d'un marteau, elle permet la recolte des tissus peripheriques du tronc (ecorce, phloeme, zone cambiale) et d'une plus ou moins grande partie du bois, sur de nombreux arbres, resineux ou feuillus, d'especes temperees ou tropicales. Les coupes preparees grâce aux echantillons obtenus avec cette methode sont utilisables pour des etudes anatomiques. Des echantillons peuvent ainsi etre collectes en complement de parts d'herbier (pour l'identification et la systematique), ainsi que pour des etudes dendroecologiques particulieres.

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