The Paleocene–Eocene Thermal Maximum record in the organic matter of the Claret and Tendruy continental sections (South-central Pyrenees, Lleida, Spain)

Early Palaeogene Louisinidae (Macroscelidea, Mammalia), their relationships and north European diversity

A new mammal fauna from the earliest Eocene of Le Clot (Corbieres, Southern France) is described. Some taxa identified there, such as Corbarimys hottingeri and Paschatherium plaziati, allow a correlation with the previously described Corbieres fauna of Fordones. Moreover, the presence at Le Clot of Lessnessina praecipuus, which is defined in Palette (Provence, Southern France) allows correlating both localities. All three of these localities are referred to the MP7 reference level, even if a direct correlation with the type locality of MP7 (Dormaal, Belgium) is not ascertained. A Southern Europe biochronological sequence is proposed for the beginning of the Eocene: Silveirinha, Fordones/Palette/Le Clot, Rians/Fournes. The diagnosis of a new species of a neoplagiaulacid multituberculate (?Ectypodus
 riansensis nov. sp.) is proposed. From a compilation of data concerning the earliest Eocene faunas from both Northern Europe and Southern Europe, we conclude that two faunas corresponding to two distinct palaeobiogeographical provinces existed in Western Europe. This faunal disparity, probably related to climatic differences, makes correlations particularly difficult between the two provinces.

/pdf/a-new-mammalian-fauna-from-the-earliest-eocene-ilerdian-of-1wzfhl4cjl.pdf

A new mammalian fauna from the earliest Eocene (Ilerdian) of the Corbières (Southern France): palaeobiogeographical implications

/pdf/porosity-of-late-paleocene-ornitholithus-eggshells-tremp-fm-2mdzkxsrwb.pdf

Porosity of Late Paleocene Ornitholithus eggshells (Tremp Fm, south-central Pyrenees, Spain): Palaeoclimatic implications

We report the discovery of the earliest European carnivoraforms, based on two new taxa from the latest Paleocene of France and Romania. A new species of Vassacyon, V. prieuri, from the locality of Rivecourt (MP6b; Oise, France) (MP = Mammalian Paleogene reference levels) is described based on a dentary fragment and isolated teeth. This species displays several primitive features compared with species of Vassacyon known from the early Eocene of North America and Europe. A second Paleocene carnivoraform, cf. Gracilocyon sp., is described based on fragmentary specimens from the locality of Jibou (MP6b; Transylvania, Romania). Carnivoraformes were previously unknown in Europe before the Eocene, and Vassacyon prieuri and cf. Gracilocyon sp. are their oldest records in Europe. These discoveries favor the hypothesis of a dispersal of these two genera from Europe to North America during the Paleocene-Eocene Thermal Maximum. Vassacyon prieuri and cf. Gracilocyon sp. strengthen support for the level MP6b an...

https://bioone.org/journals/journal-of-vertebrate-paleontology/volume-36/issue-2/02724634.2016.1082480/New-Carnivoraforms-from-the-Latest-Paleocene-of-Europe-and-Their/10.1080/02724634.2016.1082480.pdf

New carnivoraforms from the latest Paleocene of Europe and their bearing on the origin and radiation of Carnivoraformes (Carnivoramorpha, Mammalia)

The micromammal faunas from two European sections close to the Paleocene-Eocene boundary (PEb), Tremp in Spainand Dormaal in Belgium, share several species and paleoecological features in spite of their different chronological and paleo-biogeographical situation: the Tremp faunas contain no immigrant taxa, while the Dormaal faunas post-dated the Mammal DispersalEvent.BothsectionscanbecorrelatedwiththeCarbonIsotopeExcursion(CIE)event,whichliesseveralmetersabovetheTremplocali-tiesandcouldhavebegunsub-contemporaneouslywiththeDormaalSanddeposits. Oneofthemostremarkablefeaturesofthesefaunasisthedominanceinallthesamplesofdentalmicro-remainsofthecondylarthgenus Paschatherium .Herewestudythefeaturesanddistri-bution of Paschatherium species and discuss the significance of their acme in relation to the PEb and the Initial Eocene Thermal Maxi-mum. INTRODUCTION Micromammal teeth obtained by screen washing even appar-ently barren sediments in outcrops and cores are widely usedfor biostratigraphy and palaeoenvironmental studies in conti-nental deposits of Cenozoic age, and are here used to detect aregional bioevent around the Paleocene-Eocene boundary(PEb) (~55 m.y. ago). Mammalian paleofaunas from the North-ern Hemisphere underwent a major turnover across the PEb,known as the Mammalian Dispersal Event (MDE, Hooker2000). A continuous, local mammalian succession in NorthAmerica allows us to correlate this event to a major, short cli-matic pulse named the Initial Eocene Thermal Maximum(IETM; Koch et al. 1992; Gingerich 2003). In Europe, the MDEis detected by comparing fossil mammal localities from discon-tinuous deposits (karstic or isolated fluvial outcrops; Russell1964; Estravis 1992; Smith and Smith 1996; Hooker 1996). Thescattered position of the European sites hinders their correlationand dating. Moreover, these European mammalian faunas showstriking compositional differences between northern and south-ern provinces, impeding the long-distance comparison and corre-lations (Marandat 1997, Smith 2000). It is therefore interesting tofind faunal links between northern and southern European mam-malian faunas across the PEb in well-correlated stratigraphicsettings.Two particular European sections, Tremp in Spain (Southernprovince) and Dormaal in Belgium (Northern province) showfavorable conditions towards this goal. Micromammal assem-blages from continental sediments in both areas can be directly(south-Pyrenean Basin) or indirectly (Belgian Basin) correlatedwith marine deposits and with the Carbon Isotope Excursion(CIE) (Lopez-Martinez et al. 1995, 1996; Lopez-Martinez andPelaez-Campomanes 1998; 1999; Steurbaut et al. 1999; Pujalteet al. 2003; Steurbaut et al. 2003; Schmitz and Pujalte 2003).This event marked by a rapid decrease in

The acme of the micromammal Paschatherium across the Paleocene-Eocene boundary in continental Europe

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The acme of the micromammal Paschatherium across the Paleocene-Eocene boundary in continental Europe