Search publications of the members of the Royal Belgian institute of natural Sciences
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Note préliminaire sur le genre Hystatus Thomson avec la description d'une nouvelle espèce de l'île de Bornéo (Coleoptera, Cerambycidae, Prioninae)
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Notes on Species of Cardiophorinae (Candèze, 1860) from Pakistan with Description of a New Species (Coleoptera: Elateridae) and New Records
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Notes sur la distribution géographique et la variation individuelle de Cantharoctenus antennatus (Franz, 1938) (Coleoptera, Cerambycidae, Prioninae)
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Note sur le genre Microryctes Arrow, 1908 en Chine: nouvelles données de capture et description d'une espèce nouvelle (Coleoptera, Scarabaeidae, Dynastinae)
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Nouvelle donnée pour Dinocampus coccinellae (Schrank) (Hymenoptera, Bracondae) en tant que parasitoïde d'Harmonia axyridis (Pallas) (Coleoptera, Coccinellidae)
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Seconde contribution à l'étude d'Oryctes (Rykanes) heros Endrödi (Coleoptera, Scarabaeoidea, Dynastidae)
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Vietetropis viridis Komiya, 1997 newly record from Guangxi province in southern China, with a known distribution map (Coleoptera, Cerambycidae, Prioninae, Anacolini)
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Contribution to the knowledge of the Afrotropical Rutelinae (Coleoptera, Scarabaeoidea, Melolonthidae)
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Description of Lasioglossum (Mediocralictus) orchidodeceptum sp.n. from Thailand and India (Hymenoptera: Haltictidae)
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Note on the genus Stenandra Lameere, 1902 in Vietnam (Coleoptera, Cerambycidae, Parandrinae)
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Saproxylic beetles from Belgium, online distribution maps of species (Coleoptera)
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Intensive ant biotic surveys: lessons from IBISCA-Panama and new perspectives.
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Variation spatiale et saisonnière de la distribution des fourmis dans le sol d’une forêt tropicale
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Nutrient addition changes taxonomic composition but not trophic functions in a tropical leaf-litter ant assemblage
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Spatio-temporal variation of ant abundance among ground layers in a tropical forest
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First Clarkforkian Equivalent Land Mammal Age in the Latest Paleocene Basal Sparnacian Facies of Europe: Fauna, Flora, Paleoenvironment and (Bio)stratigraphy
- The Paleocene-Eocene Thermal Maximum (PETM) is correlated with the first occurrences of earliest modern mammals in the Northern Hemisphere. The latest Paleocene Clarkforkian North American Land Mammal Age, that has yielded rodents and carnivorans, is the only exception to this rule. However, until now no pre-PETM localities have yielded modern mammals in Europe or Asia. We report the first Clarkforkian equivalent Land Mammal Age in the latest Paleocene deposits of the basal Sparnacian facies at Rivecourt, in the north-central part of the Paris Basin. The new terrestrial vertebrate and macroflora assemblages are analyzed through a multidisciplinary study including sedimentologic, stratigraphic, isotopic, and palynological aspects in order to reconstruct the paleoenvironment and to evaluate biochronologic and paleogeographic implications. The mammals are moderately diverse and not abundant, contrary to turtles and champsosaurs. The macroflora is exceptional in preservation and diversity with numerous angiosperms represented by flowers, fruits, seeds and wood preserved as lignite material, revealing an abundance of Arecaceae, Betulaceae, Icacinaceae, Menispermaceae, Vitaceae and probably Cornaceae. Results indicate a Late Paleocene age based on carbon isotope data, palynology and vertebrate occurrences such as the choristoderan Champsosaurus, the arctocyonid Arctocyon, and the plesiadapid Plesiadapis tricuspidens. However, several mammal species compare better with the earliest Eocene. Among these, the particular louisinid Teilhardimys musculus, also recorded from the latest Paleocene of the Spanish Pyrenees, suggests a younger age than the typical MP6 reference level. Nevertheless, the most important aspect of the Rivecourt fauna is the presence of dental remains of a rodent and a ‘‘miacid’’ carnivoran, attesting to the presence of two modern mammalian orders in the latest Paleocene of Europe. Interestingly, these two groups are also the only modern groups recorded from the latest Paleocene of North America, making Rivecourt the first direct equivalent to the Clarkforkian Land Mammal Age outside of North America.
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Endocranial morphology of Palaeocene Plesiadapis tricuspidens and evolution of the early primate brain
- Expansion of the brain is a key feature of primate evolution. The fossil record, although incomplete, allows a partial reconstruction of changes in primate brain size and morphology through time. Palaeogene plesiadapoids, closest relatives of Euprimates (or crown-group primates), are crucial for understanding early evolution of the primate brain. However, brain morphology of this group remains poorly documented, and major questions remain regarding the initial phase of euprimate brain evolution. Micro-CT investigation of the endocranial morphology of Plesiadapis tricuspidens from the Late Palaeocene of Europe—the most complete plesiadapoid cranium known—shows that plesiadapoids retained a very small and simple brain. Plesiadapis has midbrain exposure, and minimal encephalization and neocorticalization, making it comparable with that of stem rodents and lagomorphs. However, Plesiadapis shares a domed neocortex and downwardly shifted olfactory-bulb axis with Euprimates. If accepted phylogenetic relationships are correct, then this implies that the euprimate brain underwent drastic reorganization during the Palaeocene, and some changes in brain structure preceded brain size increase and neocortex expansion during evolution of the primate brain.
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Consumption refuse, carcasses and ritual deposits at Tell Beydar (northern Syria)
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Densite et distribution de Tetrodromus tetradactylus tordayi (Macroscelididae, Mammalia) dans la reserve forestiere de Yoko (R.D.Congo)
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Effets de lisière et sex ratio de rongeurs forestiers dans un écosystème fragmenté en République Democratique du Congo (Réserve de Masako, Kisangani)
