geodiversitas 2018 ● 40 ● 17 DIRECTEUR DE LA PUBLICATION : Bruno David, Président du Muséum national d’Histoire naturelle RÉDACTEUR EN CHEF / EDITOR-IN-CHIEF : Didier Merle ASSISTANTS DE RÉDACTION / ASSISTANT EDITORS : Emmanuel Côtez ([email protected]) ; Anne Mabille MISE EN PAGE / PAGE LAYOUT : Emmanuel Côtez COMITÉ SCIENTIFIQUE / SCIENTIFIC BOARD : Christine Argot (MNHN, Paris) Beatrix Azanza (Museo Nacional de Ciencias Naturales, Madrid) Raymond L. Bernor (Howard University, Washington DC) Alain Blieck (USTL, Villeneuve d’Ascq) Henning Blom (Uppsala University) Jean Broutin (UPMC, Paris) Gaël Clément (MNHN, Paris) Ted Daeschler (Academy of Natural Sciences, Philadelphie) Bruno David (MNHN, Paris) Gregory D. Edgecombe (The Natural History Museum, Londres) Ursula Göhlich (Natural History Museum Vienna) Jin Meng (American Museum of Natural History, New York) Brigitte Meyer-Berthaud (CIRAD, Montpellier) Zhu Min (Chinese Academy of Sciences, Pékin) Isabelle Rouget (UPMC, Paris) Sevket Sen (MNHN, Paris) Stanislav Štamberg (Museum of Eastern Bohemia, Hradec Králové) Paul Taylor (The Natural History Museum, Londres) COUVERTURE / COVER : Réalisée à partir de Figure 1 de l’article/created from Figure 1 of this article. 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Diffusion – Publications scientifiques Muséum national d’Histoire naturelle CP 41 – 57 rue Cuvier F-75231 Paris cedex 05 (France) Tél. : 33 (0)1 40 79 48 05 / Fax : 33 (0)1 40 79 38 40 [email protected] / http://sciencepress.mnhn.fr © Publications scientifiques du Muséum national d’Histoire naturelle, Paris, 2018 ISSN (imprimé / print) : 1280-9659/ ISSN (électronique / electronic) : 1638-9395 Presence of the foraminifer Chapmanina gassinensis Silvestri, 1931, in the Eocene (Lutetian) of the Grignon “falunière” (Yvelines, Paris Basin). The genus Chapmanina, its species and world distribution Armelle POIGNANT 5 rue Léon Bloy, F-92260 Fontenay-aux-Roses (France) [email protected] Submitted on 6 July 2017 | accepted on 3 April 2018 | published on 30 August 2018 urn:lsid:zoobank.org:pub:1336C880-D09D-4C20-8BB1-52B58B378192 Poignant A. 2018. — Presence of the foraminifer Chapmanina gassinensis Silvestri, 1931, in the Eocene (Lutetian) of the Grignon “falunière” (Yvelines, Paris Basin). The genus Chapmanina, its species and world distribution. Geodiversitas 40 (17): 461-470. https://doi.org/10.5252/geodiversitas2018v40a17. http://geodiversitas.com/40/17 ABSTRACT KEY WORDS Foraminifer, Chapmanina gassinensis (foraminifer) has been observed as it seems for the first time in the Lutetian Eocene, of the “falunière” of Grignon (Yvelines, southwestern Paris Basin). It is widespread in the Eocene of Oligocene, western Europe, also present in the Tethysian domain l.s. and even across the Atlantic. In the Oli- Paris Basin, palaeobiogeographical gocene, it becomes very rare and has been only found in some places of Mediterranean Europe and distribution. disappears in the Miocene. The Paris Basin seems to be its northernmost occurrence. RÉSUMÉ Présence du foraminifère Chapmanina gassinensis Silvestri, 1931, dans l’Éocène (Lutétien) de la falu- nière de Grignon (Yvelines, Bassin Parisien). Le genre Chapmanina, ses espèces et sa répartition mondiale. MOTS CLÉS Foraminifère, Chapmanina gassinensis (foraminifère) a été observée pour la première fois, semble-t-il, dans le Luté- Éocène, tien de la falunière de Grignon (Yvelines, sud-ouest du Bassin de Paris). Elle est largement répandue Oligocène, dans l’Éocène de l’Europe occidentale, présente aussi dans le domaine téthysien l.s. et jusque dans le Bassin de Paris, distribution continent américain. À l’Oligocène, elle ne s’observe que dans quelques points de l’Europe méditer- paléobiogéographique. ranéenne et disparaît ensuite. Le Bassin de Paris apparaît comme sa localisation la plus septentrionale. GEODIVERSITAS • 2018 • 40 (17) © Publications scientifiques du Muséum national d’Histoire naturelle, Paris. www.geodiversitas.com 461 Poignant A. FIG. 1. — Chapmanina gassinensis Silvestri, 1931 (Lutetian, Grignon falunière, Yvelines), in lateral (A) and apical (B) views (MNHN.F.F62410). Scale bars: 200 µm. INTRODUCTION associated can be up to 4 mm in diameter, Chapmanina gas- sinensis can’t exceed 1 mm. According Smout (1954) opin- Several samples of the Lutetian marl-pit of Grignon (western ion: “Chapmanina has a very small test compared to most Paris Basin) have been examined for a research of miliolids. complex species”. In one of these samples (probably from unit 4, see Fig. 2), I found two specimens of Chapmanina gassinensis Silvestri, 1931 (MNHN.F.F62410; Figs 1, 2). This foraminifer is easy THE GENUS CHAPMANINA AND ITS SPECIES to identify and can’t be confused with any other one. It is well known in the Eocene of France (Aquitaine Basin) and also According Loeblich & Tappan systematics (1987), the genus observed in the Eocene of various Tethysian European countries Chapmanina belongs to the family Chapmaninidae Thal- and of the Tethysian domain l.s. It is only pointed out in the mann, 1938, superfamily Rotaliacea Ehrenberg, 1839 and Oligocene in France and a few European countries. Until now, its type species is Chapmanina gassinensis, because pointed Ch. gassinensis had never been mentionned in the Paris Basin. out at Gassino, in Torino area (Silvestri 1905a). The genus Sometimes called Chapmanina sp. or cf. gassinensis, it is very Chapmanina first appears with the nameChapmania described probably Chapmanina gassinensis because of the typical associ- by Silvestri & Prever (in Silvestri 1904). In 1931, Silvestri ated microfauna. A new species of Chapmanina Silvestri, 1931 changed this name in Chapmanina, two species having been has been described in the Paleocene of Australia (Quilty & described with the name Chapmania: Packham 2006), it will be treated further. Chapmania galea Silvestri, 1923, type species of the genus Before studying the genus and its species, it is useful to give Preverina Frizzell, 1949, considered by Loeblich & Tappan some precisions: one of the aims of this work is to show the (1987) as a synonymous of Chapmanina, species of the italian wide Tethyan distribution of Chapmanina gassinensis, but it Tortonian (surroundings of Reggio d’Emilia), represented only is probably not an extensive recense of all the localities where by an axial section, but the holotype in unknown (Cita & this species has been found; in the same way, all the references Scipolo 1961), as well as the topotypes. concerning the localities of its presence in a particular country Chapmania sertata Silvestri, 1929, from the Lutetian of have not been reported, when they are too many, such as is Ancona, Italia, illustrated by a bad section (Frizzell [1949] the case of the Aquitaine in France or of Turkey. did not think it is a Chapmanina). Moreover, it is important to remark that Chapmanina gas- Quilty & Packham (2006) described Chapmanina conjuncta, sinensis has not always been considered as larger foraminifera, in the Australian Paleocene (see further). and so, it has probably been omitted several times in the In 1918, Halkyard described Patellina conica which is in literature dealing with large benthic assemblages containing fact Chapmanina gassinensis. for example: Nummulites, Alveolina, Discocyclina, Pellatispira, Loeblich & Tappan (1987: pl. 775, figs 1-9), reported Fabiania cassis (Oppenheim, 1896) with which it is frequently the genus Chapmanina from the Lutetian until the mid- 462 GEODIVERSITAS • 2018 • 40 (17) The foraminifer Chapmanina gassinensis in the Grignon “falunière” (Yvelines, Paris Basin). The species of the genus Chapmanina Units Sub-units Sequential units a Batillaria and milliolids limestone (0.1 m) 1 A10 b Lucinids and miliolids limestone, erosive base (0.2 m) a Seraphs limestone (0.5 m) 2 b Coral and mollusc fine limestone (0.1 m) c Seraphs limestone (0.5 m) A9 ont n fr Laminated and partialy lithified limestone a with Orbitolites, differential compaction (0.6 m) 3 wester Laminated and partialy lithified limestone with rare b glauconite grains, differential compaction (0.6 m) Milliolids and Orbitolites calcareous sand with a rare glauconite grains (1 m) Milliolids and molluscs (Chama) calcareous sand with b 4 A8 rare glauconite grains (0.3 m) ont n fr Milliolids and Orbitolites calcareous sand with c rare glauconite grains. Highly bioclastic, easter channeling filling at the base (1 to 1.5 m) Glauconitic calcareous sand, a highly bioturbated (0.6 to 0.9 m) 5 A7 Glauconitic with bioclasts and grains of quartz MIDDLE LUTETIAN b filling micro-channels, Campanile giganteum, lithified agregates (0.8 m) a Glauconitic calcareous sand, large quartz grains, oblique