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Titre du document / Document title

Les rongeurs de l'Eocène inférieur et moyen d'Europe Occidentale. Systématique, phylogénie, biochronologie et paléobiogéographie des niveaux-repères MP 7 a MP 14 = The rodents of the early and middle Eocene from Western Europe. Systematic, phylogeny, biochronology and palaeobiogeography from the MP 7 to MP 14 reference levels

Auteur(s) / Author(s)

ESCARGUEL G. (1) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Laboratoire de Paléontologie, UMR 5554 Institut des Sciences de l'Evolution, Université de Montpellier II, Sciences et Techniques du Languedoc, C.C. 064, Place Eugène Bataillon, 34095 Montpellier, FRANCE

Résumé / Abstract

Fourteen distinct phyletical lineages which belong at least in three families: Ischyromyidae ALSTON, 1876, Gliridae THOMAS, 1896 and Theridomyidae ALSTON, 1876, have been identified after the study of more than 3600 rodent dental remains from about twenty Early and Middle Eocene european localities. A systematical and phylogenetical revision of these rodents has been achieved. Nearly all the specific and generic diagnosis are emended. Several new combinations and synonymies are proposed. Four new species and two new genera, Euromys nov. (Ailuravinae) and Hartenbergeromys nov. (Microparamyini), are named and described. Euromys nov. gen. is known by three distinctive ypresian (MP 7 to MP 10 european reference levels) chronospecies. This new lineage is thought to be the direct ancestor of Meldimys MICHAUX, 1968 and Ailuraus RÜTIMEYER, 1891. A new species of the genus Plesiarctomys BRAVARD, 1850, Pl. lapicidinarum from Condé-en-Brie (MP 8-9 reference level), allows to relate the Plesiarctomys lineage to the Pseudoparamys MICHAUX, 1964 one. The taxa Sparnacomys HARTENBERGER, 1971, Pantrogna HARTENBERGER, 1971, and Corbarimys MARANDAT, 1989 are erected to genus rank; the last one is not thought to be an Ischyromyidae. A new chronospecies of Pantrogna, P. marandati nov. sp. from the locality of Prémontré (MP 10 reference level), is described. This lineage is at the origin of two others, namely Masillamys TOBIEN, 1954, including M. mattaueri (HARTENBERGER, 1975) nov. comb. (MP 10 reference level), and Hartenbergeromys nov. gen., known from MP 10 (H. hautefeuillei nov. sp.) and MP 11 (H. parvus TOBIEN, 1954) reference levels. The phylogenetical position of Hartenbergeromys nov. gen., at the origin of the european family Theridomyidae, is discussed. The systematical and phylogenetical status of two probable Paramyinae, Paramys woodi MICHAUX, 1964 and an unnamed genus and species, are discussed. New populations of the primitive Gliridae Eogliravus HARTENBERGER, 1971 and of the primitive Theridomyidae Protadelomys HARTENBERGER, 1968, are described and assigned to previously known species. A calibrated biochronological scale of the Early Eocene localities is proposed on the basis of the systematical and phylogenetical study of these different species. Eight levels with significantly different numerical ages are thus distinguished and characterized only on the basis of the evolutionary stages observed in the different lineages. These levels (localities) are, from the oldest to the youngest: Silveirinha, Fordones-Palette, Dormaal, Mutigny, Condé-en-Brie, Avenay, Saint-Agnan, and Prémontré-Grauves. The position of Condé-en-Brie and Prémontré is notably discussed as well as that of perimesogean localities with regard to those from Northern Europe. The intra-continental and, to a lesser extent, inter-continental palaeobiogeographical context is analyzed in this phylogenetical, systematical and biochronological framework. Three faunal exchange events, occuring around the Paleocene-Eocene boundary and involving Asia, Europe and North America, are distinguished and thoroughly described. Based on the available chronostratigraphical data, these three faunal exchange events can be dated at about 56,5, 56, and 55,5 M.a. A fourth phase, strictly european (North-South exchanges), possibly occured between the MP 8-9 and MP 10 reference levels (ca. 51 M.a.).

Revue / Journal Title

Palaeovertebrata    ISSN  0031-0247   CODEN PLVTAW 

Source / Source

1999, vol. 28, no2-4, pp. 89-351 (13 p.)

Langue / Language

Français
Revue : Anglais

Editeur / Publisher

Université de Montpellier II, Laboratoire de paléontologie, Montpellier, FRANCE  (1967) (Revue)

Mots-clés anglais / English Keywords

Western Europe

;

France

;

Paris Basin

;

rodents

;

biostratigraphy

;

lower Eocene

;

middle Eocene

;

phylogeny

;

biochronology

;

paleobiogeography

;

key beds

;

Ypresian

;

new taxa

;

paleogeography

;

teeth

;

bones

;

jaws

;

Europe

;

Rodentia

;

Eutheria

;

Theria

;

Mammalia

;

Tetrapoda

;

Vertebrata

;

Chordata

;

Eocene

;

Paleogene

;

Tertiary

;

Cenozoic

;

Phanerozoic

;

Mots-clés français / French Keywords

Europe Ouest

;

France

;

Bassin Parisien

;

Faune rongeur

;

Biostratigraphie

;

Eocène inf

;

Eocène moyen

;

Phylogénie

;

Biochronologie

;

Paléobiogéographie

;

Niveau repère

;

Yprésien

;

Taxon nouveau

;

Paléogéographie

;

Dent

;

Ossement

;

Mâchoire

;

Ischyromyidae

;

Theridomyidae

;

Gliridae

;

Europe

;

Rodentia

;

Eutheria

;

Theria

;

Mammalia

;

Tetrapoda

;

Vertebrata

;

Chordata

;

Eocène

;

Paléogène

;

Tertiaire

;

Cénozoïque

;

Phanérozoïque

;

Mots-clés espagnols / Spanish Keywords

Europa del Oeste

;

Francia

;

Cuenca parisina

;

Fauna roedor

;

Bioestratigrafía

;

Eoceno inf

;

Eoceno medio

;

Filogenia

;

Nivel guía

;

Ypresiano

;

Nuevo taxón

;

Paleogeografía

;

Diente

;

Osamenta

;

Maxilar

;

Europa

;

Rodentia

;

Mammalia

;

Tetrapoda

;

Vertebrata

;

Chordata

;

Eoceno

;

Paleógeno

;

Terciario

;

Cenozoico

;

Fanerozoico

;

Localisation / Location

INIST-CNRS, Cote INIST : 14105, 35400008650385.0010

Nº notice refdoc (ud4) : 1318454



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